.animation {
    width: 100%;
    height: 100%;
    animation: pulse 6s infinite;
  }
h1{
    background-color:black;
    color:white;
    font-family: 'Staatliches', cursive;
    text-align:center;
}
  @keyframes pulse {
    0% {
      background-color: red;
    }
    20%{
        background-color:orange
    }
    40%
    {
        background-color: yellow;
    }
    60%{
        backrgound-color:green;
    }
    80%{
        background-color:blue;
    }
    100% {
      background-color: purple;
    }
  }
  
  html,
  body {
    height: 100%;
  }