body,html{margin:0;padding:0;overflow:hidden;height:100%}@keyframes birds{0%{left:-150px}to{left:100%}}.birds{width:150px;position:absolute;top:60px;left:-150px;animation:birds linear 5s 5s infinite}.container{background-image:url(/ground.png);background-size:cover;background-position:center;width:100%;height:100vh;display:flex;justify-content:center;align-items:flex-end;position:relative}.man{position:absolute;left:40px;width:120px;height:130px;transition:bottom .5s ease}.pillar{position:absolute;bottom:0;width:50px;background-color:brown;animation:movePillar 3s linear infinite}.button-container{position:absolute;bottom:40px;right:120px}.button{padding:12px;border-radius:12px}@keyframes movePillar{0%{right:-100px}to{left:-100px}}.game-over{text-align:center;margin-top:50vh}