CodePen Embed - css: content

<div class="content">，我是</div>

div{
  --name: "紅色死神";
}
.content::before{
  content: "大家好";
}
.content::after{
  content: var(--name);
}

This Pen is owned by deathhell on CodePen.

This Pen doesn't use any external CSS resources.

This Pen doesn't use any external JavaScript resources.