Why Does Grid Gap Percentage Cause Overflow in CSS Grid?

Grid Gap Percentage Overflow in CSS Grid

In CSS grid, setting grid-gap to a percentage can lead to overflow issues, where the gap between grid items becomes excessively large. This occurs because browsers vary in how they interpret percentage values. These differences result in incorrect calculations of the grid's total width and height.

To resolve this issue, it's recommended to avoid using percentage values for grid-gap. Instead, use units like pixels (px), em, or rem, which provide more accurate and consistent gap measurements.

Example:

.grid {
  display: grid;
  grid-gap: 20px;  // Use fixed units instead of percentages
  background-color: blue;
}

By using a fixed unit for grid-gap, you ensure that the gap between grid items remains constant, regardless of browser differences. This approach provides a more predictable and consistent layout.

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