User:Logo12/global.css

<!DOCTYPE html> div { width:100px; height:100px; background:red; position:relative; animation:myfirst 1s infinite; animation-direction:alternate;

/* Safari and Chrome */ animation:myfirst 1s infinite; animation-direction:alternate; }

@keyframes myfirst { 0%  {font-size:1px;} 100% {font-size:50px;} }

@-webkit-keyframes myfirst /* Safari and Chrome */ { 0%  {font-size:1px;} 100% {font-size:50px;} }