{
    "gutters": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/column-gap.json",
            "name": "column-gap",
            "slug": "CSS/column-gap",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/column-gap",
            "summary": "The column-gap CSS property sets the size of the gap (gutter) between an element's columns.",
            "support": {
                "chrome": {
                    "version_added": "1"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "12"
                },
                "firefox": {
                    "version_added": "1.5"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": "10"
                },
                "oculus": "mirror",
                "opera": {
                    "version_added": "11.1"
                },
                "opera_android": {
                    "version_added": "11.1"
                },
                "safari": {
                    "version_added": "3"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "column-gap"
        }
    ],
    "propdef-grid-area": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-area.json",
            "name": "grid-area",
            "slug": "CSS/grid-area",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-area",
            "summary": "The grid-area CSS shorthand property specifies a grid item's size and location within a grid by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the edges of its grid area.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-area"
        }
    ],
    "auto-tracks": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-auto-columns.json",
            "name": "grid-auto-columns",
            "slug": "CSS/grid-auto-columns",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-auto-columns",
            "summary": "The grid-auto-columns CSS property specifies the size of an implicitly-created grid column track or pattern of tracks.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": [
                    {
                        "version_added": "70"
                    },
                    {
                        "version_added": "52",
                        "version_removed": "70",
                        "partial_implementation": true,
                        "notes": "Does not accept multiple track-size values. See <a href='https://bugzil.la/1339672'>bug 1339672</a>."
                    }
                ],
                "firefox_android": "mirror",
                "ie": {
                    "version_added": "10",
                    "alternative_name": "-ms-grid-columns"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-auto-columns"
        },
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-auto-rows.json",
            "name": "grid-auto-rows",
            "slug": "CSS/grid-auto-rows",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-auto-rows",
            "summary": "The grid-auto-rows CSS property specifies the size of an implicitly-created grid row track or pattern of tracks.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": [
                    {
                        "version_added": "70"
                    },
                    {
                        "version_added": "52",
                        "version_removed": "70",
                        "partial_implementation": true,
                        "notes": "Does not accept multiple track-size values. See <a href='https://bugzil.la/1339672'>bug 1339672</a>."
                    }
                ],
                "firefox_android": "mirror",
                "ie": {
                    "version_added": "10",
                    "alternative_name": "-ms-grid-rows"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-auto-rows"
        }
    ],
    "grid-auto-flow-property": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-auto-flow.json",
            "name": "grid-auto-flow",
            "slug": "CSS/grid-auto-flow",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-auto-flow",
            "summary": "The grid-auto-flow CSS property controls how the auto-placement algorithm works, specifying exactly how auto-placed items get flowed into the grid.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-auto-flow"
        }
    ],
    "line-placement": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-column-end.json",
            "name": "grid-column-end",
            "slug": "CSS/grid-column-end",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-column-end",
            "summary": "The grid-column-end CSS property specifies a grid item's end position within the grid column by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the block-end edge of its grid area.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-column-end"
        },
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-column-start.json",
            "name": "grid-column-start",
            "slug": "CSS/grid-column-start",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-column-start",
            "summary": "The grid-column-start CSS property specifies a grid item's start position within the grid column by contributing a line, a span, or nothing (automatic) to its grid placement. This start position defines the block-start edge of the grid area.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-column-start"
        },
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-row-end.json",
            "name": "grid-row-end",
            "slug": "CSS/grid-row-end",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-row-end",
            "summary": "The grid-row-end CSS property specifies a grid item's end position within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-end edge of its grid area.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-row-end"
        },
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-row-start.json",
            "name": "grid-row-start",
            "slug": "CSS/grid-row-start",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-row-start",
            "summary": "The grid-row-start CSS property specifies a grid item's start position within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-start edge of its grid area.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-row-start"
        }
    ],
    "placement-shorthands": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-column.json",
            "name": "grid-column",
            "slug": "CSS/grid-column",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-column",
            "summary": "The grid-column CSS shorthand property specifies a grid item's size and location within a grid column by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-start and inline-end edge of its grid area.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-column"
        },
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-row.json",
            "name": "grid-row",
            "slug": "CSS/grid-row",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-row",
            "summary": "The grid-row CSS shorthand property specifies a grid item's size and location within a grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-start and inline-end edge of its grid area.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-row"
        }
    ],
    "grid-template-areas-property": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-template-areas.json",
            "name": "grid-template-areas",
            "slug": "CSS/grid-template-areas",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-template-areas",
            "summary": "The grid-template-areas CSS property specifies named grid areas, establishing the cells in the grid and assigning them names.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-template-areas"
        }
    ],
    "valdef-grid-template-columns-minmax": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-template-columns.json",
            "name": "minmax",
            "slug": "CSS/minmax()",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/minmax()",
            "summary": "The minmax() CSS function defines a size range greater than or equal to min and less than or equal to max. It is used with CSS Grids.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "minmax()"
        },
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-template-rows.json",
            "name": "minmax",
            "slug": "CSS/minmax()",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/minmax()",
            "summary": "The minmax() CSS function defines a size range greater than or equal to min and less than or equal to max. It is used with CSS Grids.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "minmax()"
        }
    ],
    "repeat-notation": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-template-columns.json",
            "name": "repeat",
            "slug": "CSS/repeat()",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/repeat()",
            "summary": "The repeat() CSS function represents a repeated fragment of the track list, allowing a large number of columns or rows that exhibit a recurring pattern to be written in a more compact form.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": [
                    {
                        "version_added": "76"
                    },
                    {
                        "version_added": "57",
                        "version_removed": "76",
                        "notes": "<code>repeat(auto-fill, ...)</code> and <code>repeat(auto-fit, ...)</code> only support one repeated column (see <a href='https://bugzil.la/1341507'>bug 1341507</a>).",
                        "partial_implementation": true
                    },
                    {
                        "version_added": "52",
                        "version_removed": "57",
                        "notes": "<a href='https://developer.mozilla.org/docs/Web/CSS/calc'><code>calc()</code></a> doesn't work in <code>repeat()</code> (see <a href='https://bugzil.la/1350069'>bug 1350069</a>).",
                        "partial_implementation": true
                    }
                ],
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "repeat()"
        },
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-template-rows.json",
            "name": "repeat",
            "slug": "CSS/repeat()",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/repeat()",
            "summary": "The repeat() CSS function represents a repeated fragment of the track list, allowing a large number of columns or rows that exhibit a recurring pattern to be written in a more compact form.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": [
                    {
                        "version_added": "76"
                    },
                    {
                        "version_added": "57",
                        "version_removed": "76",
                        "notes": "<code>repeat(auto-fill, ...)</code> and <code>repeat(auto-fit, ...)</code> only support one repeated column (see <a href='https://bugzil.la/1341507'>bug 1341507</a>).",
                        "partial_implementation": true
                    },
                    {
                        "version_added": "52",
                        "version_removed": "57",
                        "notes": "<a href='https://developer.mozilla.org/docs/Web/CSS/calc'><code>calc()</code></a> doesn't work in <code>repeat()</code> (see <a href='https://bugzil.la/1350069'>bug 1350069</a>).",
                        "partial_implementation": true
                    }
                ],
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "repeat()"
        }
    ],
    "subgrids": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "needsflag": [
                "blink"
            ],
            "filename": "css/properties/grid-template-columns.json",
            "name": "subgrid",
            "slug": "CSS/CSS_Grid_Layout/Subgrid",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/Subgrid",
            "summary": "Level 2 of the CSS Grid Layout specification includes a subgrid value for grid-template-columns and grid-template-rows. This guide details what subgrid does, and gives some use cases and design patterns that are solved by the feature.",
            "support": {
                "chrome": {
                    "version_added": "114",
                    "impl_url": "https://crbug.com/618969",
                    "flags": [
                        {
                            "type": "preference",
                            "name": "#enable-experimental-web-platform-features",
                            "value_to_set": "Enabled"
                        }
                    ]
                },
                "chrome_android": "mirror",
                "edge": "mirror",
                "firefox": {
                    "version_added": "71"
                },
                "firefox_android": {
                    "version_added": false
                },
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "16"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "114",
                    "impl_url": "https://crbug.com/618969",
                    "flags": [
                        {
                            "type": "preference",
                            "name": "#enable-experimental-web-platform-features",
                            "value_to_set": "Enabled"
                        }
                    ]
                }
            },
            "caniuse": {
                "feature": "css-subgrid",
                "title": "CSS Subgrid"
            },
            "title": "Subgrid"
        },
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-template-columns.json",
            "name": "grid-template-columns",
            "slug": "CSS/grid-template-columns",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-template-columns",
            "summary": "The grid-template-columns CSS property defines the line names and track sizing functions of the grid columns.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": "10",
                    "alternative_name": "-ms-grid-columns"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "caniuse": {
                "feature": "css-subgrid",
                "title": "CSS Subgrid"
            },
            "title": "grid-template-columns"
        },
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "needsflag": [
                "blink"
            ],
            "filename": "css/properties/grid-template-rows.json",
            "name": "subgrid",
            "slug": "CSS/CSS_Grid_Layout/Subgrid",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/Subgrid",
            "summary": "Level 2 of the CSS Grid Layout specification includes a subgrid value for grid-template-columns and grid-template-rows. This guide details what subgrid does, and gives some use cases and design patterns that are solved by the feature.",
            "support": {
                "chrome": {
                    "version_added": "114",
                    "impl_url": "https://crbug.com/618969",
                    "flags": [
                        {
                            "type": "preference",
                            "name": "#enable-experimental-web-platform-features",
                            "value_to_set": "Enabled"
                        }
                    ]
                },
                "chrome_android": "mirror",
                "edge": "mirror",
                "firefox": {
                    "version_added": "71"
                },
                "firefox_android": {
                    "version_added": false
                },
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "16"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "114",
                    "impl_url": "https://crbug.com/618969",
                    "flags": [
                        {
                            "type": "preference",
                            "name": "#enable-experimental-web-platform-features",
                            "value_to_set": "Enabled"
                        }
                    ]
                }
            },
            "caniuse": {
                "feature": "css-subgrid",
                "title": "CSS Subgrid"
            },
            "title": "Subgrid"
        },
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-template-rows.json",
            "name": "grid-template-rows",
            "slug": "CSS/grid-template-rows",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-template-rows",
            "summary": "The grid-template-rows CSS property defines the line names and track sizing functions of the grid rows.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": "10",
                    "alternative_name": "-ms-grid-rows"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "caniuse": {
                "feature": "css-subgrid",
                "title": "CSS Subgrid"
            },
            "title": "grid-template-rows"
        }
    ],
    "track-sizing": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-template-columns.json",
            "name": "grid-template-columns",
            "slug": "CSS/grid-template-columns",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-template-columns",
            "summary": "The grid-template-columns CSS property defines the line names and track sizing functions of the grid columns.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": "10",
                    "alternative_name": "-ms-grid-columns"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-template-columns"
        },
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-template-rows.json",
            "name": "grid-template-rows",
            "slug": "CSS/grid-template-rows",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-template-rows",
            "summary": "The grid-template-rows CSS property defines the line names and track sizing functions of the grid rows.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": "10",
                    "alternative_name": "-ms-grid-rows"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-template-rows"
        }
    ],
    "explicit-grid-shorthand": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid-template.json",
            "name": "grid-template",
            "slug": "CSS/grid-template",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid-template",
            "summary": "The grid-template CSS property is a shorthand property for defining grid columns, grid rows, and grid areas.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0"
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid-template"
        }
    ],
    "grid-shorthand": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/properties/grid.json",
            "name": "grid",
            "slug": "CSS/grid",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/grid",
            "summary": "The grid CSS property is a shorthand property that sets all of the explicit and implicit grid properties in a single declaration.",
            "support": {
                "chrome": {
                    "version_added": "57"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "16"
                },
                "firefox": {
                    "version_added": "52"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": {
                    "version_added": "6.0",
                    "notes": "This was added early so is out of sync with the equivalent Chromium version."
                },
                "webview_android": "mirror",
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "grid"
        }
    ],
    "fr-unit": [
        {
            "engines": [
                "blink",
                "gecko",
                "webkit"
            ],
            "filename": "css/types/flex.json",
            "name": "flex",
            "slug": "CSS/flex_value",
            "mdn_url": "https://developer.mozilla.org/en-US/docs/Web/CSS/flex_value",
            "summary": "The <flex> CSS data type denotes a flexible length within a grid container. It is used in grid-template-columns, grid-template-rows and other related properties.",
            "support": {
                "chrome": {
                    "version_added": "29"
                },
                "chrome_android": "mirror",
                "edge": {
                    "version_added": "12"
                },
                "firefox": {
                    "version_added": "40"
                },
                "firefox_android": "mirror",
                "ie": {
                    "version_added": "10"
                },
                "oculus": "mirror",
                "opera": {
                    "version_added": "28"
                },
                "opera_android": {
                    "version_added": "28"
                },
                "safari": {
                    "version_added": "10.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": {
                    "version_added": "57"
                },
                "edge_blink": {
                    "version_added": "79"
                }
            },
            "title": "<flex>"
        }
    ]
}
