body {
  font-family: Arial;
  color: black;
}

.split {
  height: 100%;
  width: 50%;
  position: fixed;
  z-index: 1;
  top: 0;
  overflow-x: hidden;
  padding-top: 20px;
}

.left {
  left: 0;
  background-color: green;
}

.right {
  height: 20%;
  right: 0;
  background-color: blue;
}

.centered2 {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  background-color: blue;
}

.centered {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}


.centered img {
  width: 150px;
  border-radius: 50%;
}


select {
  margin: 0 1em 1em 0;
  position: relative;
  top: -1px;
}

        table,
        th,
        td {
            border: 1px solid black;
            border-collapse: collapse;
            padding: 6px;
        }