Why Does Using Percentage Values for `grid-gap` Cause Overflow in CSS Grid?

Grid-Gap Percentage Overflow in CSS Grid

The concept of CSS grid allows for precise layout control, but assigning percentage values to the grid-gap property can lead to unexpected results and potential overflow issues. This issue arises because the browser interprets percentage values relative to the grid's height, which can create inconsistencies and difficulties.

In our example, we have a grid with a 50% grid-gap. Initially, the browser operates under the assumption that the grid will have an auto height based on its content. When it calculates the gap's size, it does so relative to this automated height, leading to potential overflows.

To resolve this, we must explicitly define the grid's height. By setting a fixed height, the browser can accurately calculate the gap's size based on the specified value. This will prevent the gap from overflowing and ensure the grid's intended layout.

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