html - Making sibling elements take the same width breaks the text in them

Question

I am trying to set the width of the div, and it's content to the width of the paragraph user-title in it. This is the HTML and CSS:

.panel {
  margin-bottom: 20px;
  width: auto;
  display: inline-flex;
  flex-direction: column;
  box-shadow: 0 2px 4px 0 #C6C2BF;
  padding: 0.5rem 1rem 1rem;
}

.user-title {
  display: flex;
}

.panel>div {
  display: flex;
  flex-direction: column;
}

.panel>div>p {
  display: flex;
  flex-grow: 1;
  width: 0;
}

<div class="panel">
  <p class="user-title">Date 08.03.2018 User: Joe Doe</p>
  <div>
    <p>Some long text in the paragraph that is wider than the title above it</p>
    <p>Another shorter text</p>
  </div>
</div>

Answer 1

If I'm not totally mistaken here, the only way to make that work cross browsers using CSS is to combine display: inline-block with display: table-row/display: table-caption.

Stack snippet

.panel {
  margin-bottom: 20px;
  display: inline-block;
  box-shadow: 0 2px 4px 0 #C6C2BF;
  padding: 0.5rem 1rem 1rem;
}

.user-title {
  display: table-row;
}

.panel > div {
  display: table-caption;
  caption-side: bottom;
}

<div class="panel">
    <p class="user-title">Date 08.03.2018 User: Joe Doe</p>
    <div>
      <p>Some long text in the paragraph that is wider than the title above it</p>
      <p>Another shorter text</p>
    </div>
</div>