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Make flex items take content width, not width of parent container

html
responsive-design
css
flexbox
Anton ShumikhinbyAnton Shumikhin·Dec 7, 2024
TLDR

Ensure flex items respect their intrinsic content width by setting flex: 0 0 auto;. Here, each item neither grows nor shrinks beyond its content width.

.flex-item { /* This line here is just like Gandalf, saying "You shall not grow...or shrink!" */ flex: 0 0 auto; }

Quick sample code:

<div style="display: flex;"> <div class="flex-item">Short</div> <div class="flex-item">Medium length</div> <div class="flex-item">The longest content of the three</div> </div>

Flex properties in a nutshell

Working with flex

The flex property is a shorthand for flex-grow, flex-shrink, and flex-basis. So when using flex: 0 0 auto;, you're actually saying: "Item, don't grow, don't shrink, just enjoy being yourself!"

Controlling alignment with align-items and align-self

The container's align-items property generally dictates alignment of items. But the individual item's rebellious align-self property can override this, achieving an inline look and respecting the content width.

Avoid display: inline-flex misunderstanding

display: inline-flex might seem helpful, but it's kind of the "Distracto-Tron 3000" of flex properties—shiny, neat, but not useful in this case. For content width, our main players are the flex properties and align-* commands.

Flexbox mastery with CSS

Applying width: min-content

width: min-content is the secret weapon in your Flexbox arsenal. It's like a shrink ray for your flex items, minifying any overflowing content. Always check browser compatibility, because some, like Internet Explorer 11, might not support this property.

The magic of margin-right: auto

margin-right: auto on a child flex item is like the CSS equivalent of the 'Abracadabra', pushing it to the left and letting it take up only its content width magic!

Cross and main axis alignment got you feeling lost? align-items: flex-start is your compass, aligning items at the start of the container on the cross-axis while respecting content width.

Handling tricky flex cases

Solving issues with flex-basis

If flex-basis was a candy, it would be a "Jawbreaker." Tough to figure out, but crucial for how the browser determines item size before additional space is distributed, ensuring correct sizing.

Wise usage of flex-grow

Flex-grow is like "Miracle-Gro" for your flex items. But be careful! Without supervision, it can distort your item width. For content-width fidelity, it's best not to use it at all.

Preparing fallback designs

Sometimes, modern CSS properties like width: min-content won't work due to lack of support. As a plan B, use display: inline-flex. Not as cool, but gets the job done.