html - Set div to have its siblings width

Question

I'm looking for a CSS solution to the following:-

<div style="display:inline;">
     <div>The content of this div is dynamically created but will always be wider than
              the below div. 
     </div>
     <div> Need this div to have the same width as the above div.
     </div>
</div>

question from:https://stackoverflow.com/questions/9769587/set-div-to-have-its-siblings-width

Answer 1

Here's another Flexbox solution which allows for the second child to wrap to match the width of the variable height sibling.

.wrapper > div {
  border: 1px solid;
}

.child {
  display: flex;
}

.child div {
  flex-grow: 1;
  width: 0;
}

.wrapper {
  display: inline-block;
}

<div class="wrapper">
    <div>This div is dynamically sized based on its content</div>
    <div class="child"><div>This div will always be the same width as the preceding div, even if its content is longer (or shorter too).</div></div>
</div>