css3做一个牛顿摆

效果图

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        html,
        body {
     
            height: 100%;
            margin: 0px;
            padding: 0px;
        }

        .main-container {
     
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100%;
            background-color: #d7c8d0;
        }

        .swing-container {
     
            width: 500px;
            height: 400px;
            display: flex;
            flex-wrap: wrap;
        }

        .roof {
     
            width: 100%;
            height: 20px;
            background-color: #18619b;
        }

        .ball-wrapper {
     
            flex-basis: 100px;
            height: 380px;
            display: flex;
            align-items: center;
            flex-direction: column;
        }

        .ball {
     
            height: 100px;
            width: 100px;
            text-align: center;
            line-height: 90px;
            border-radius: 50px;
            background-color: #edcb66;
        }

        .rope {
     
            background: black;
            width: 2px;
            height: 280px;
        }

        .left-ball.ball-wrapper {
     
            transform-origin: center top;
            animation: left-ball-swing 4s 0s infinite normal;
        }

        .right-ball.ball-wrapper {
     
            transform-origin: center top;
            animation: right-ball-swing 4s 2s infinite normal;
        }

        @keyframes left-ball-swing {
     
            0% {
     
                transform: rotate(0deg);
                animation-timing-function: ease-out;
            }
            25% {
     
                transform: rotate(90deg);
                animation-timing-function: ease-in;
            }
            50% {
     
                transform: rotate(0deg)
            }
            100% {
     }
        }

        @keyframes right-ball-swing {
     
            0% {
     
                transform: rotate(0deg);
                animation-timing-function: ease-out;
            }
            25% {
     
                transform: rotate(-90deg);
                animation-timing-function: ease-in;
            }
            50% {
     
                transform: rotate(0deg)
            }
            100% {
     }
        }
    </style>
</head>

<body>
    <div class="main-container">
        <div class="swing-container">
            <div class="roof">
            </div>
            <div class="left-ball ball-wrapper">
                <div class="rope"></div>
                <div class="ball"></div>
            </div>
            <div class="ball-wrapper">
                <div class="rope"></div>
                <div class="ball"></div>
            </div>
            <div class="ball-wrapper">
                <div class="rope"></div>
                <div class="ball"></div>
            </div>
            <div class="ball-wrapper">
                <div class="rope"></div>
                <div class="ball"></div>
            </div>
            <div class="right-ball ball-wrapper">
                <div class="rope"></div>
                <div class="ball"></div>
            </div>
        </div>
    </div>
</body>
</html>

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