Play Button with Pulse Effect

<!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>Play Button with Pulse Effect</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        body {
            background-color: #292929;
        }

        section {
            width: 100%;
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        a.playBtn {
            width: 80px;
            height: 80px;
            background-color: #e1434b;
            border-radius: 100%;
            border: #fff solid 2px;
            position: relative;
            animation: shadowPulse 1s infinite linear;
        }

        a.playBtn::before {
            position: absolute;
            content: '';
            border-top: transparent 15px solid;
            border-bottom: transparent 15px solid;
            border-left: #fff 25px solid;
            top: 50%;
            left: 50%;
            transform: translate(-40%, -50%);
        }

        a.playBtn::after {
            position: absolute;
            content: '';
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            border: #fff solid 2px;
            border-radius: 100%;
            animation: ringPulse 1s infinite linear;
        }

        @keyframes ringPulse {
            0% {
                opacity: 0;
                transform: scale(0.95);
            }

            10% {
                opacity: 1;
            }

            80%, 100% {
                opacity: 0;
                transform: scale(2);
            }
        }

        @keyframes shadowPulse {
            0% {
                box-shadow: 0 0 8px 6px transparent,
                            0 0 0 0 transparent,
                            0 0 0 0 transparent;
            }

            10% {
                box-shadow: 0 0 8px 6px #e1434b,
                            0 0 12px 10px transparent,
                            0 0 12px 5px #e1434b;
            }

            80%, 100% {
                box-shadow: 0 0 8px 6px transparent,
                            0 0 0 40px transparent,
                            0 0 0 40px transparent;
            }
        }
    </style>
</head>
<body>
    <section>
        <a href="" class="playBtn"></a>
    </section>
</body>
</html>

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Result Screenshot(s)

Play Button with Pulse EffectWorking Sample0