Spinner Loader

<!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>Spinner Loader</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        body { background-color: #292929; }

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

        .loader {
            width: 80px;
            height: 80px;
            border: transparent solid 3px;
            border-left-color: #fff;
            border-top-color: #fff;
            border-radius: 100%;
            position: relative;
            animation: loading 5s infinite linear;
            
        }

        .loader::before {
            position: absolute;
            content: '';
            top: 10px;
            left: 10px;
            right: 10px;
            bottom: 10px;
            border: transparent solid 3px;
            border-left-color: #fff;
            border-top-color: #fff;
            border-radius: 100%;
            animation: loading 2s infinite linear reverse
        }


        .loader::after {
            position: absolute;
            content: '';
            top: 20px;
            left: 20px;
            right: 20px;
            bottom: 20px;
            border: transparent solid 3px;
            border-left-color: #fff;
            border-top-color: #fff;
            border-radius: 100%;
            animation: loading 4s infinite linear;
        }

        @keyframes loading {
            from {
                transform: rotate(0deg);
            }

            to {
                transform: rotate(360deg);
            }
        }
        
    </style>
</head>
<body>
    <section>
        <div class="loader"></div>
    </section>
</body>
</html>
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Result Screenshot(s)

Spinner LoaderWorking Sample0