How Can I Fix Unequal Widths in My Flexbox Navigation?

Troubleshooting Flexbox for Unequal Element Widths

When creating a flexbox navigation layout, it's crucial to achieve even distribution of width among the elements. However, sometimes you may encounter issues where elements vary in size. This can arise due to the influence of flex-basis, a property that defines the initial size of flex items.

Default Flex-Basis

By default, flex-basis is set to auto, which means the flex item's initial size is determined by its content size. In your example, elements with more text content will receive more space because their flex-basis is larger.

Setting Flex-Basis to Zero

To ensure equal width distribution, you can set flex-basis to 0 for all elements. This will reset their initial sizes, allowing any remaining space to be proportionally divided based on flex-grow, which is set to 1 by default. Here's the updated code:

li {
    flex-grow: 1;
    flex-basis: 0;
    /* ... */
}

Example Fiddle

This code adjustment leads to the desired outcome, where all elements in your flexbox navigation have equal widths:

[Updated Fiddle](https://fiddle.jshell.net/h2db4yxw/11/)

Visualization

The following diagram from the flexbox specification illustrates the concept of flex-basis and its impact on element sizing:

[Diagram of flex-basis from the flexbox specification](https://www.w3.org/TR/css-flexbox-1/#flex-basis-property)

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