<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<title></title>
<style>
html,body {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
font-size: 13.3333333vw;
display: flex;
align-items: center;
justify-content: center;
}
.container {
width: 2.3rem;
height: .3rem;
display: flex;
justify-content: space-between;
}
.container span {
width: .3rem;
height: .3rem;
--duration: 2s;
}
.girl {
animation: slide var(--duration) ease-in-out infinite alternate;
}
@keyframes slide {
from {
transform: translateX(0);
filter: brightness(1);
}
to {
transform: translateX(2rem);
filter: brightness(1.45);
}
}
.boys {
width: 1.8rem;
display: flex;
justify-content: space-between;
}
.boys span {
animation: var(--duration) ease-in-out infinite alternate;
}
.boys span:nth-child(1) {
animation-name: jump-off-1;
}
.boys span:nth-child(2) {
animation-name: jump-off-2;
}
.boys span:nth-child(3) {
animation-name: jump-off-3;
}
.boys span:nth-child(4) {
animation-name: jump-off-4;
}
@keyframes jump-off-1 {
0%, 15% {
transform: rotate(0deg);
}
35%, 100% {
transform-origin: -0.1rem center;
transform: rotate(-180deg);
}
}
@keyframes jump-off-2 {
0%, 35% {
transform: rotate(0deg);
}
50%, 100% {
transform-origin: -.1rem center;
transform: rotate(-180deg);
}
}
@keyframes jump-off-3 {
0%, 50% {
transform: rotate(0deg);
}
65%, 100% {
transform-origin: -0.1rem center;
transform: rotate(-180deg);
}
}
@keyframes jump-off-4 {
0%, 65% {
transform: rotate(0deg);
}
85%, 100% {
transform-origin: -0.1rem center;
transform: rotate(-180deg);
}
}
.container span::before {
content: ‘‘;
position: absolute;
width: inherit;
height: inherit;
border-radius: 15%;
box-shadow: 0 0 0.08rem rgba(0, 0, 0, 0.3);
}
.girl::before {
background-color: hotpink;
}
.boys span::before {
background-color: dodgerblue;
animation: var(--duration) ease-in-out infinite alternate;
}
.boys span:nth-child(1)::before {
filter: brightness(1);
animation-name: jump-down-1;
}
.boys span:nth-child(2)::before {
filter: brightness(1.15);
animation-name: jump-down-2;
}
.boys span:nth-child(3)::before {
filter: brightness(1.3);
animation-name: jump-down-3;
}
.boys span:nth-child(4)::before {
filter: brightness(1.45);
animation-name: jump-down-4;
}
@keyframes jump-down-1 {
5% {
transform: scale(1, 1);
}
15% {
transform-origin: center bottom;
transform: scale(1.3, 0.7);
}
22.5%, 27.5% {
transform-origin: center center;
transform: scale(0.8, 1.4);
}
35% {
transform-origin: center top;
transform: scale(1.3, 0.7);
}
45%, 100% {
transform: scale(1, 1);
}
}
@keyframes jump-down-2 {
25% {
transform: scale(1, 1);
}
35% {
transform-origin: center bottom;
transform: scale(1.3, 0.7);
}
41.25%, 43.75% {
transform-origin: center center;
transform: scale(0.8, 1.4);
}
50% {
transform-origin: center top;
transform: scale(1.3, 0.7);
}
60%, 100% {
transform: scale(1, 1);
}
}
@keyframes jump-down-3 {
40% {
transform: scale(1, 1);
}
50% {
transform-origin: center bottom;
transform: scale(1.3, 0.7);
}
56.25%, 58.75% {
transform-origin: center center;
transform: scale(0.8, 1.4);
}
65% {
transform-origin: center top;
transform: scale(1.3, 0.7);
}
75%, 100% {
transform: scale(1, 1);
}
}
@keyframes jump-down-4 {
55% {
transform: scale(1, 1);
}
65% {
transform-origin: center bottom;
transform: scale(1.3, 0.7);
}
72.5%, 77.5% {
transform-origin: center center;
transform: scale(0.8, 1.4);
}
85% {
transform-origin: center top;
transform: scale(1.3, 0.7);
}
95%, 100% {
transform: scale(1, 1);
}
}
</style>
</head>
<body>
<div class="container">
<span class="girl"></span>
<div class="boys">
<span></span>
<span></span>
<span></span>
<span></span>
</div>
</div>
</body>
</html>
原文：https://www.cnblogs.com/QQPrincekin/p/11778551.html