body{font-family:Comic Sans MS, Comic Sans, cursive;text-align:center;vertical-align:middle;animation:background-blink 0.1s infinite;margin:0;position:absolute;overflow:hidden;width:100%;height:100%}@keyframes background-blink{0%, 49%{background-color:#f0f;color:#0f0}50%, 100%{background-color:#0f0;color:#f0f}}main{position:relative;top:50%;transform:translateY(-50%)}.spin{animation:spin 4s linear infinite}@keyframes spin{0%{transform:rotate(0deg) scale(1)}50%{transform:rotate(360deg) scale(2)}100%{transform:rotate(720deg) scale(1)}}