Why Isn't My CSS Grid Layout Working in IE11, Even with Autoprefixer?

CSS Grid Layout Not Working in IE11 Even with Prefixes

Despite using auto-prefixer to add prefixes to relevant CSS properties, CSS Grid layout appears to malfunction in IE11. This issue arises due to the browser's outdated Grid specification.

Outdated Grid Specification

IE11 implements an older version of the Grid specification, which lacks some key properties introduced in later versions. Specifically, the following properties are not supported by IE11:

• repeat() function for defining grid tracks
• span keyword for item spanning
• grid-gap property for spacing

Solution

To address this issue, the code should be updated to use the correct syntax and properties for the older grid spec. The following changes are necessary:

1. Replace repeat() with Explicit Track Declarations

Instead of using the repeat() function, explicitly declare row and column tracks using comma-separated values:

.grid {
  -ms-grid-columns: 1fr 1fr 1fr 1fr;
  grid-template-columns: repeat(4, 1fr);
  -ms-grid-rows: 270px 270px 270px 270px;
  grid-template-rows: repeat(4, 270px);
}

2. Use Spanning Properties

Replace span with its long-hand forms grid-row-span and grid-column-span:

.grid .grid-item.height-2x {
  -ms-grid-row-span: 2;
  grid-row: span 2;
}
.grid .grid-item.width-2x {
  -ms-grid-column-span: 2;
  grid-column: span 2;
}

3. Remove Grid-Gap in IE11

IE11 does not support the grid-gap property. Consider using margins or padding for spacing instead:

.grid .grid-item {
  margin: 30px;
}

Additional Note

IE11 also lacks support for automatic placement of grid items. To ensure proper placement, explicitly specify the grid row and column positions for each item using the -ms-grid-row and -ms-grid-column properties.

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