live/index.html at master · ybh20/live · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>爱心</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            text-decoration: none;
            box-sizing: border-box;
        }

        body {
            display: grid;
            place-items: center;
            height: 100vh;
            background: #000000;
        }

        .box {
            transform: rotateZ(45deg);
            width: 230px;
            height: 230px;
        }

        @keyframes pulsate {
            0% {
                transform: scale(.6);
            }
            25% {
                transform: scale(0.8);
            }
            50% {
                transform: scale(1);
            }
            75% {
                transform: scale(0.8);
            }
            100% {
                transform: scale(0.6);
            }
        }

        .lave {
            position: relative;
            width: 200px;
            height: 200px;
            background: #ff0000;
            animation: pulsate normal 3s infinite running linear;
        }

        .lave::before {
            content: "";
            position: absolute;
            display: block;
            left: -100px;
            width: 200px;
            height: 200px;
            background: #ff0000;
            border-radius: 50%;
        }

        .lave::after {
            content: "";
            position: absolute;
            display: block;
            top: -100px;
            width: 200px;
            height: 200px;
            background: #ff0000;
            border-radius: 50%;
        }

    </style>
</head>
<body>
    <div class="box">
        <div class="lave"></div>
    </div>
</body>
</html>