html, body {
      height: 100%;
    }
    body {
      background-color: #fff;
      font-family: sans-serif;
      margin-top: 0;
      margin-bottom: 0;
    }
    h1 {
      font-weight: normal;
      font-size: 140%;
    }

    iframe {
      width: 100%;
      height: 100%;
      border-style: solid;
      border-color: #ddd;
      border-width: 0 1px 1px 0;
    }


    /* Split the screen in half */
.split {
  height: 100%;
  width: 50%;
  position: fixed;
  z-index: 1;
  top: 0;
  overflow-x: hidden;
  padding-top: 20px;
}

/* Control the left side */
.left {
  left: 0;

}

/* Control the right side */
.right {
  right: 0;

}