.loading-wave{width:300px;height:100px;display:flex;justify-content:center;align-items:flex-end;margin:auto}.loading-bar{width:20px;height:10px;margin:0 5px;background-color:#3498db;border-radius:5px;animation:loading-wave-animation 1s ease-in-out infinite}.loading-bar:nth-child(2){animation-delay:.1s}.loading-bar:nth-child(3){animation-delay:.2s}.loading-bar:nth-child(4){animation-delay:.3s}@keyframes loading-wave-animation{0%{height:10px}50%{height:50px}to{height:10px}}