尝试一下 » - 在线编辑器

          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <style>
    #main {
      display: flex;
      flex-direction: column-reverse;
    }

    #main div {
      width: 40px;
      height: 40px;
    }
  </style>
</head>
<body>

  <div id="main">
    <div style="background-color:coral;">A</div>
    <div style="background-color:lightblue;">B</div>
    <div style="background-color:khaki;">C</div>
    <div style="background-color:pink;">D</div>
    <div style="background-color:lightgrey;">E</div>
    <div style="background-color:lightgreen;">F</div>
  </div>

</body>
</html>
        