How to prevent a flex item from shrinking smaller than its content?

Question

I've set up a jsfiddle to demonstrate the problem here:
http://jsfiddle.net/x0eo3aeo/2/

HTML:

<div class="flexContainer">
    <div class="flexCol1">aaa</div>
    <div class="flexCol2"><div style="width:100px; background-color:yellow;">bbb</div></div>
    <div class="flexCol3"><div style="width:250px; background-color:pink;">Hello world, some long text here to make this element stay at 250px while splitting onto multiple lines.</div></div>
</div>

CSS:

.flexContainer {
    display: flex;
    width: 100%;
    flex-direction: row;
}
.flexCol1, .flexCol3 {
    flex: 1;
    background-color: green;
}

Firefox actually behaves exactly how I want. Columns 1 and 3 flex equally until the width of column 3 hits the fixed size of its child div, and then only column 1 is flexed. However, in Chrome, both columns continue to flex equally and the child content of column 3 overflows.

Is there a way to achieve the Firefox-style behaviour in a cross-browser way?

Answer 1

You should be able to achieve the Firefox behavior in Chrome by adding min-width: -webkit-min-content; to .flexCol3. This prevents it from shrinking below its min-content width. (This is what's supposed to happen by default, due to min-width:auto introduced in the flexbox spec, but that hasn't been implemented in Chrome yet.)

As noted in comments below, IE doesn't seem to have a min-content width keyword implemented, so you might have to do something hackier there (like min-width: 250px). Fortunately, IE's next release (12?) does have min-width:auto implemented, so this should Just Work like Firefox there, I'm told.