Check out this layout:
<div class="wrapper">
<div class="middleman">
<div class="inner-child">
/* Child with the ability to expand height */
</div>
</div>
</div>
Imagine the wrapper has an initial height of 100px
and the inner-child starts off at 70px
. When the inner-child's height grows to 300px
, how can we ensure that the wrapper also expands its height?