What is the mechanism through which a flexbox enlarges to accommodate its overflowing child elements?

I am working with a flexbox layout.

Here is the HTML code structure:

<div class="grid">
  <div class="row">
    <div class="column">Content</div>
    <div class="column">Content2</div>
    <div class="column">Content2</div>
  </div>
  <div class="row">
    <div class="column">Content</div>
    <div class="column">Content2</div>
    <div class="column">Content2</div>
  </div>
</div>

And here is the corresponding CSS:

.grid {
  overflow: auto;
  width: 500px;
  height: 400px;
  background-color: #eee;

  display: flex;
  flex-direction: column;
}

.row {
  background-color: #ddd;
  align-items: stretch;
  display: flex;
  border: 2px solid black;
}

.column {
  flex: 1 0 20em;
  padding: 0.2em;
  border: 2px solid lightblue;
  /*background-color: hsla(0, 100%, 80%, 50%);*/
}

(check https://jsfiddle.net/bz71qptu/1/)

In this scenario, the .box element does not expand to the full width of its children. How can I make it achieve this?

Edit

I have updated the jsfiddle with an example of the desired visual outcome.

Edit 2

I had to modify the question slightly based on my specific issue. The parent element has flex-direction: column alignment, making the use of min-width ineffective. The solution involving min-width would be ideal if not for this limitation.

Edit 3

I appreciate all the assistance provided so far, but I still cannot achieve the exact behavior I am aiming for in my example. Despite following the advice given, I seem unable to get it to function as needed. A more detailed jsfiddle has been created with visible borders for clarity. After reviewing the responses and attempting to apply them to my case, I am still struggling to reach the desired result. Apologies if this fiddle has already been addressed.

Answer №1

Revised Response

Your updated query involves changing the flex-direction property from row to column.

Following this modification, the utilization of the flex attribute on .box becomes irrelevant for your specific needs, as it now governs vertical dimensions. Essentially, in a column layout, the flex property manages height rather than width.

Although I suggested applying overflow: auto to

.box</code, which appeared effective when tested across browsers such as Chrome, Firefox, and IE11.</p>

<p><a href="http://jsfiddle.net/ck8gtpvg/" rel="nofollow"><strong>VIEW DEMO</strong></a></p>

<p>You mentioned encountering a broken layout within jsFiddle. I experienced the same issue, but simply clicking [RUN] resolved it.</p>

<p>Since the recent upgrade on jsFiddle, there have been instances of confusion due to code caching. To address this, you may need to clear jsFiddle cookies (visit <em>chrome://settings/cookies</em> in your browser) or rerun the revised code after loading.</p>

<hr>

<p><strong>Original Answer</strong></p>

<p>If you replace the <code>content
value with either auto or 0 for the flex-basis property, you may see improved results.

It's worth noting that the content value is not yet widely supported.

Alternatively, using just flex: 1 might be a simpler solution for your situation.

References:

Answer №2

  • class .box acts as a flexbox container and a flexed child of class .container

display: flex sets it up as a flexbox container

flex: 1 0 auto determines its behavior as a child (of .container)

  • class .element is a flexed child of class .box

display: flex makes .element function as a flexbox container, but this change may not be visible in your sample code (unless .element has children)

flex: 1 0 auto specifies how it behaves as a child (of .box)

With no specific sizes except for 1000em set for class .element, overflow: auto for class

.container</code, and <code>flex-shrink: 0
(in flex: 1 0 auto) for both class .box and .element, all elements will adjust according to the defined 1000em limit.

Simply update both instances of flex: 1 0 auto to flex: 1 (defaults to flex: 1 1 auto) for the solution!

Slight modification: Change .element to flex: 1; min-width: 1000em

Fiddle Link

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