Example of making the <div> element fill the remaining horizontal space in Flexbox:

Source Code: (back to article)

<!DOCTYPE html>
<html>
  <head>
    <title>Title of the document</title>
    <style>
      .ar-course-nav {
        cursor: pointer;
        padding: 8px 12px 8px 12px;
        border: 1px solid grey;
        border-radius: 8px;
        color: #555555;
        display: flex;
        justify-content: space-between;
      }
      .ar-course-nav:hover {
        background-color: rgba(0, 0, 0, 0.1);
      }
      .content {
        width: 96%;
      }
      .top-row {
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
      }
      .bottom-row {
        width: 100%;
        display: flex;
        justify-content: space-between;
      }
      .left {
        margin-right: 8px;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
        flex-grow: 1;
      }
      .right {
        text-align: right;
        white-space: nowrap;
        flex-shrink: 0;
      }
      .arrow {
        margin-left: 8px;
      }
    </style>
  </head>
  <body>
    <div class="ar-course-nav">
      <div class="content">
        <div class="top-row">
          <strong title="Some name, which is really quite long and goes on a bit. Then, when you think it stops, it keeps on going even longer!">
            Some name, which is really quite long and goes on a bit. 
            Then, when you think it stops, it keeps on going even longer!
            </strong>
        </div>
        <div class="bottom-row">
          <div class="left" title="A really really really really really really really really really really really long name">
            A really really really really really really really really really really really long name
          </div>
          <div class="right"> Created: 27 April 2020 </div>
        </div>
      </div>
      <div class="arrow">
        <strong>&gt;</strong>
      </div>
    </div>
  </body>
</html>