footer {
    position: fixed;
    bottom: 0;
    width: 100%;
}

.tulisan-besar {
    font-size: 5rem;
}

html { 
  background: url('zona1.webp') no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}