style.css

html, body {
  width: 100%;
  height: 100%;
  background-color: #FF00FF;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  display: flex;
  justify-content: center;
  align-items: center;
}


h1 span {
  position: relative;
  display: inline-block;
  animation: bounce .3s ease infinite alternate;
  font-family: "Comic Sans MS", cursive, sans-serif;
  font-size: 5em;
  color: #00FF00;
  text-shadow: 0 1px 0 #CCC,
               0 2px 0 #CCC,
               0 3px 0 #CCC,
               0 4px 0 #CCC,
               0 5px 0 #CCC,
               0 6px 0 transparent,
               0 7px 0 transparent,
               0 8px 0 transparent,
               0 9px 0 transparent,
               0 10px 10px rgba(0, 0, 0, .4);
}

h1 span:nth-child(2) { animation-delay: .1s; }
h1 span:nth-child(3) { animation-delay: .2s; }
h1 span:nth-child(4) { animation-delay: .3s; }
h1 span:nth-child(5) { animation-delay: .4s; }
h1 span:nth-child(6) { animation-delay: .5s; }
h1 span:nth-child(7) { animation-delay: .6s; }
h1 span:nth-child(8) { animation-delay: .7s; }
h1 span:nth-child(9) { animation-delay: .8s; }
h1 span:nth-child(10) { animation-delay: .9s; }
h1 span:nth-child(11) { animation-delay: .10s; }
h1 span:nth-child(12) { animation-delay: .11s; }
h1 span:nth-child(13) { animation-delay: .12s; }
h1 span:nth-child(14) { animation-delay: .13s; }
h1 span:nth-child(15) { animation-delay: .14s; }
h1 span:nth-child(16) { animation-delay: .15s; }
h1 span:nth-child(17) { animation-delay: .16s; }

@keyframes bounce {
  100% {
    top: -20px;
    text-shadow: 0 1px 0 #CCC,
                 0 2px 0 #CCC,
                 0 3px 0 #CCC,
                 0 4px 0 #CCC,
                 0 5px 0 #CCC,
                 0 6px 0 #CCC,
                 0 7px 0 #CCC,
                 0 8px 0 #CCC,
                 0 9px 0 #CCC,
                 0 50px 25px rgba(0, 0, 0, .2);
  }
}