User:তাহমিদ/Sandbox/style.css

@keyframes myOwnAnimation { 0% { bottom: 0; } 50% { top: 50vh; } 100% { top: 0; } }

.myOwnClass { position:fixed; bottom:0; right: 0; animation-name: myOwnAnimation; animation-duration: 4s; animation-delay: 4s; animation-iteration-count: infinite; animation-direction: alternate; animation-timing-function: linear; }