html - flex-wrap not working in nested flex container

Question

I expected the blue and red box to wrap when the screen width is small in this example, because the cyan box is set to flex-wrap.

However, that's not happening. Why is this not working?

Here is the code:

.foo,
.foo1,
.foo3 {
  color: #333;
  text-align: center;
  padding: 1em;
  background: #ffea61;
  box-shadow: 0 0 0.5em #999;
  display: flex;
}

.foo1 {
  background: green;
  width: 200px;
  flex: 1 1 100%;
}

.foo2 {
  background: pink;
  display: flex;
  padding: 10px;
}

.foo3 {
  background: cyan;
  flex-wrap: wrap;
}

.bar1,
.bar2 {
  background: blue;
  width: 50px;
  height: 30px;
}

.bar2 {
  background: red;
}

.column {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  background: orange;
  height: 150px;
}

<div class="column">
  <div class="foo1"></div>
  <div class="foo">
    <div class="foo2">
      <div class="foo3">
        <div class="bar1"></div>
        <div class="bar2"></div>
      </div>
    </div>
  </div>
  <div class="foo1"></div>
</div>

Answer 1

This may be a bug with a column wrap flex container. The cyan box is refusing to shrink, which prevents the red box from wrapping.

You could set a width to the second column or .foo2 or .foo3, and that will force the items to wrap. But that's probably not what you want.

One workaround is to not use column wrap in this case. Stick to row nowrap:

.column {
  display: flex;
  background: orange;
  height: 150px;
}

.foo,
.foo1,
.foo3 {
  display: flex;
  justify-content: center;
  color: #333;
  text-align: center;
  padding: 1em;
  background: #ffea61;
  box-shadow: 0 0 0.5em #999;
}

.foo {
  flex: 1;
}

.foo1 {
  flex: 0 0 200px;
  background: green;
}

.foo2 {
  display: flex;
  background: pink;
  padding: 10px;
}

.foo3 {
  flex-wrap: wrap;
  margin: 0 auto;
  background: cyan;
}

.bar1,
.bar2 {
  background: blue;
  width: 50px;
  height: 30px;
}

.bar2 {
  background: red;
}

<div class="column">
  <div class="foo1"></div>
  <div class="foo">
    <div class="foo2">
      <div class="foo3">
        <div class="bar1"></div>
        <div class="bar2"></div>
      </div>
    </div>
  </div>
  <div class="foo1"></div>
</div>