h1 {
  color: red;
}

.content {
  position: relative;
  top: 80px;
}

.split {
  height: 100%;
  width: 50%;
  position: fixed;
  z-index: 1;
  overflow-x: hidden;
  padding-top: 20px;
}

.left {
  top: 50%;
  left: 20%;
  transform: translate(-25%, -25%);
}

.right {
  top: 20%;
  right: -20%;
}

.centered {
  position: absolute;
  display: block;
  text-align: center;
  left: 35%;
}

.page-content {
  position: absolute;
  top: 0px;
  right: 0px;
  left: 64px;
  padding: 10px;
}

.test {
  position: absolute;
  top: 0%;
  right: 0px;
  left: 64px;
  border: 3px solid green;
  padding: 10px;
}