canvas {
    background-color: rgb(180, 180, 180);
    border-style: solid;
    border-width: 1px;
    border-color: black;
    border-radius: 5px;
  }

body {
  margin-top: 100px;
  color: rgb(32, 32, 32); 
  background: linear-gradient(90deg, rgb(30, 30, 30) 0%, rgb(70, 70, 70) 20%, rgb(120, 120, 120) 50%, rgb(70, 70, 70) 80%, rgb(30, 30, 30) 100%);
  font-family: Arial, Helvetica, sans-serif, monospace;
  text-align: center;
}