body {
  background: #fff;
  background-size: cover;
  -webkit-animation: bg-color 5s infintite;
  animation: bg-color 15s infinite;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
}

h1 {
  text-align: center;
  margin: 0;
}

@-webkit-keyframes bg-color {
  14.3% {
    background-color: #C77DF3;
  }
  28.6% {
    background-color: #8A2BE2;
  }
  42.9% {
    background-color: #0000ff;
  }
  57.2% {
    background-color: #00ff00;
  }
  71.5% {
    background-color: #ffdd00;
  }
  85.8% {
    background-color: #ff7700;
  }
  100% {
    background-color: #FF0000;
  }
}

@keyframes bg-color {
  14.3% {
    background-color: #C77DF3;
  }
  28.6% {
    background-color: #8A2BE2;
  }
  42.9% {
    background-color: #0000ff;
  }
  57.2% {
    background-color: #00ff00;
  }
  71.5% {
    background-color: #ffdd00;
  }
  85.8% {
    background-color: #ff7700;
  }
  100% {
    background-color: #FF0000;
  }
}