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How to Stretch a Flex Child to Fill the Container Height
When working with Flexbox, it's common to encounter the issue where a child element does not stretch to the full height of its container. This is often due to incorrect usage of the height: 100% property.
In Flexbox, the height: 100% property can be problematic because:
The solution is to remove the height: 100% property and rely on Flexbox's default behavior. By default, flex items in a row direction (the typical layout) align vertically with the property align-items: stretch. This means that the child element will automatically stretch to fill the available height of the container.
Here's an example that demonstrates the correct usage without height: 100%:
<code class="html"><div style='display: flex'> <div style='background-color: yellow; width: 20px'></div> <div style='background-color: blue'> some<br> cool<br> text </div> </div></code>
In this example, the yellow child will stretch to fill the height of the container, regardless of the height of the blue child's text. This is because the default align-items: stretch value ensures that flex items are vertically stretched to occupy the available space.
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