CSS3實現水波球動畫

.ball-container {
position: relative;
width: 500px;
height: 500px;
}
.ball {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 200px;
height: 200px;
border-radius: 50%;
background-color: #bad4ed;
animation: ripple 4s infinite ease-in-out;
}
@keyframes ripple {
0% {
box-shadow: 0 0 0 0 rgba(0, 0, 0, 0.1);
}
70% {
box-shadow: 0 0 0 30px rgba(0, 0, 0, 0.1);
}
100% {
box-shadow: 0 0 0 0 rgba(0, 0, 0, 0.1);
}
}