CSS
body {
background: #323436;
}
.bounce {
position: absolute;
top: 50%;
left: 50%;
width: 80px;
height: 80px;
margin-top: 80px;
background: transparent;
border-radius: 50%;
transform: translate(-50%,-50%);
}
.bounce:before {
content: '';
position: absolute;
z-index: 10;
width: 100%;
height: 100%;
background: #3498db;
border-radius: 50%;
box-shadow: inset 0 -10px rgba(0,0,0,0.1);
animation: bounce .75s infinite linear;
}
.bounce:after {
content: '';
position: absolute;
width: 100%;
height: 100%;
background: rgba(0,0,0,0.1);
border-radius: 50%;
transform: scale(1,0.25);
animation: shadow .75s infinite linear;
}
@keyframes bounce {
0% { transform: translate(0,-50%) scale(1,0.8); }
30% { transform: translate(0,-250%) scale(0.8,1); }
60% { transform: translate(0,-300%) scale(0.8,1); }
85% { transform: translate(0,-50%) scale(0.8,1); }
88% { transform: translate(0,-50%) scale(0.8,1); }
95%, 100% { transform: translate(0,-50%) scale(1,0.8); }
}
@keyframes shadow {
0% { transform: scale(1,0.25); }
30% { transform: scale(1.5,0.25); }
60% { transform: scale(2,0.25); }
85% { transform: scale(1,0.25); }
90% { transform: scale(1,0.25); }
100% { transform: scale(1,0.25); }
}
