html {
    font-family: sans-serif;
  }

  body {
    margin: 0;
  }

  button {
    font: inherit;
    background: #5102ac;
    border: 1px solid #5102ac;
    color: white;
    cursor: pointer;
    padding: 1.25rem 2.5rem;
    font-size: 1.5rem;
  }

  button:focus {
    outline: none;
  }

  button:hover,
  button:active {
    background: #832ee4;
    border-color: #832ee4;
  }

  #control-center {
    border: 2px solid #ccc;
    margin: 5rem;
    padding: 2rem;
  }