How to Ensure Flexbox Children Occupy Available Vertical Space?

Ensuring Flexbox Children Occupy Available Vertical Space

When utilizing a flexbox layout with multiple columns, it can be desirable for the children to occupy varying heights to fully use the available space, rather than being restricted to the height of the row's tallest child.

Addressing the Issue

Flexbox rows naturally behave by aligning items vertically within their designated space. However, to prevent items from stretching to the full height of the row, the align-items property can be used to control vertical alignment.

Solution

To achieve the desired behavior, set the align-items property to flex-start:

#container {
  width: 800px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
}

This will allow the children to retain their intrinsic height, while maintaining the vertical alignment of the row.

Additional Options

If the desired layout requires more complex spacing behavior, consider using the column orientation or the multi-column module to achieve the desired results. For further information, refer to the comprehensive SO answer at https://stackoverflow.com/a/20862961/1652962.

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