 type="text/css">* { margin: 0; padding: 0 }
    div {
      font: 20px/1em Ahem;
      width: 5em;
    }
    .container {
      border-top: solid green 1em;
      border-bottom: solid red 1em;
      height: 4em;
    }
    .before {
      margin-bottom: 2em;
    }
    .float {
      float: left;
      height: 2em;
    }
    .clear {
      clear: both;
      margin-top: 2em;
      height: 1em;
      background: green;
    }
    </style>
  </head>
  <body>
    <p>Test passes if there is no red visible on the 