body { 
    overflow: hidden; 
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    background-color: #eee;
    transition: background-color 1s ease-in-out;
  }
  #c {
    position: relative;
    z-index: 1;
    filter: contrast(3);
  }
  h1 {
    width: 100vw;
    height: 100vh;
    position: absolute;
    z-index: 2;
    color: #eee;
    transition: color 1s ease-in-out;
    font-size: 8em;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center; 
    cursor: pointer;
  }
  p#clickHere {
    text-transform: uppercase;
    padding: 1em;
  }