css 弹跳小球

资料

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<div class="circle"></div>
<div class="line"></div>
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body {
-webkit-box-reflect: below 0px -webkit-linear-gradient(transparent,transparent 50%, rgba(255,255,255,.6));
}
.circle {
width: 100px;
height: 100px;
/* background: red; */
background: radial-gradient(circle at 40% 0, red 60%, #104b63);
border-radius: 50%;
margin-top: 300px;
margin-left: 300px;
transform: translate(0, -200px);
animation: circle 1.8s cubic-bezier(0.18, 0.89, 0.32, 1.28) infinite;
}

@keyframes circle {
0% {
transform: translate(0, -200px);
}
10% {
transform: translate(0, -160px);
}
20% {
transform: translate(0, -120px);
}
30% {
transform: translate(0, -80px);
}
40% {
transform: translate(0, -40px);
}
50% {
transform: translate(0, 0);
}
60% {
transform: translate(0, -40px) scale(1.13, 0.87);
}
70% {
transform: translate(0, -80px) scale(0.87, 1.13);
}
80% {
transform: translate(0, -120px) scale(1.05, 0.95);
}
90% {
transform: translate(0, -160px) scale(0.98, 1.02);
}
100% {
transform: translate(0, -200px);
}
}

.line {
height: 1px;
width: 100%;
background-color: #000;
}

See the Pen 弹跳小球 by xiaotiandada (@xiaotiandada) on CodePen.