Scrolling a flexbox with overflowing content

I’ve spoken to Tab Atkins (author of the flexbox spec) about this, and this is what we came up with:

HTML:

<div class="content">
    <div class="box">
        <div class="column">Column 1</div>
        <div class="column">Column 2</div>
        <div class="column">Column 3</div>
    </div>
</div>

CSS:

.content {
    flex: 1;
    display: flex;
    overflow: auto;
}

.box {
    display: flex;
    min-height: min-content; /* needs vendor prefixes */
}

Here are the pens:

  1. Short columns being stretched.
  2. Longer columns overflowing and scrolling.

The reason this works is because align-items: stretch doesn’t shrink its items if they have an intrinsic height, which is accomplished here by min-content.

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