body {
    background-color: black;
    text-align: center;

}

#down {
  overflow-x: hidden;
  background-color: rgb(0, 0, 0);
  height: 600px;
  width: 700px;
  margin-left: auto;
  margin-right: auto;
  padding: 10px;
  border: 0.2rem solid;color: #ffffff;
  font-size: 20px