css 实心圆波纹状向外扩散

<!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>
        @keyframes warn {
            0% {
                transform: scale(0.3);
                -webkit-transform: scale(0.3);
                opacity: 0.0;
            }
    
            25% {
                transform: scale(0.3);
                -webkit-transform: scale(0.3);
                opacity: 0.1;
            }
    
            50% {
                transform: scale(0.5);
                -webkit-transform: scale(0.5);
                opacity: 0.3;
            }
    
            75% {
                transform: scale(0.8);
                -webkit-transform: scale(0.8);
                opacity: 0.5;
            }
    
            100% {
                transform: scale(1);
                -webkit-transform: scale(1);
                opacity: 0.0;
            }
        }
    
        @keyframes warn1 {
            0% {
                transform: scale(0.3);
                -webkit-transform: scale(0.3);
                opacity: 0.0;
            }
    
            25% {
                transform: scale(0.3);
                -webkit-transform: scale(0.3);
                opacity: 0.1;
            }
    
            50% {
                transform: scale(0.3);
                -webkit-transform: scale(0.3);
                opacity: 0.3;
            }
    
            75% {
                transform: scale(0.5);
                -webkit-transform: scale(0.5);
                opacity: 0.5;
            }
    
            100% {
                transform: scale(0.8);
                -webkit-transform: scale(0.8);
                opacity: 0.0;
            }
        }
    
        .container {
            position: relative;
            width: 120px;
            height: 120px;
            left: 10px;
            top: 10px;
            padding: 100px auto;
        }
    
    
    
        .dot {
            position: absolute;
            width: 10px;
            height: 10px;
            left: 160px;
            top: 160px;
            -webkit-border-radius: 50%;
            -moz-border-radius: 50%;
            border: 1px solid #33ccff;
            border-radius: 50%;
            background-color: #33ccff;
            z-index: 2;
        }
    
    
        .pulse {
            position: absolute;
            width: 88px;
            height: 88px;
            left: 120px;
            top: 120px;
            border: 2px solid #3399ff;
            -webkit-border-radius: 50%;
            -moz-border-radius: 50%;
            border-radius: 50%;
            z-index: 1;
            opacity: 0;
            -webkit-animation: warn 2s ease-out;
            -moz-animation: warn 2s ease-out;
            animation: warn 2s ease-out;
            -webkit-animation-iteration-count: infinite;
            -moz-animation-iteration-count: infinite;
            animation-iteration-count: infinite;
    
        }
    
    
        .pulse1 {
            position: absolute;
            width: 88px;
            height: 88px;
            left: 120px;
            top: 120px;
            border: 2px solid #3399ff;
            -webkit-border-radius: 50%;
            -moz-border-radius: 50%;
            border-radius: 50%;
            z-index: 1;
            opacity: 0;
            -webkit-animation: warn1 2s ease-out;
            -moz-animation: warn1 2s ease-out;
            animation: warn1 2s ease-out;
            -webkit-animation-iteration-count: infinite;
            -moz-animation-iteration-count: infinite;
            animation-iteration-count: infinite;
    
        }
        
        
    </style>
</head>

<body>
   
        
        <div class="container">
            <div class="dot"></div>
            <div class="pulse"></div>
            <div class="pulse1"></div>
        </div>
       
</body>

</html>
css 实心圆波纹状向外扩散

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