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console
<!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>Loading</title>
    <link rel="stylesheet" href="./index.css">
</head>
<body>
    <section>
        <div class="loading">
            <div class="blocks" style="--i: 1"></div>
            <div class="blocks" style="--i: 2"></div>
            <div class="blocks" style="--i: 3"></div>
            <div class="blocks" style="--i: 4"></div>
            <div class="blocks" style="--i: 5"></div>
            <div class="blocks" style="--i: 6"></div>
            <div class="blocks" style="--i: 7"></div>
            <div class="blocks" style="--i: 8"></div>
            <div class="blocks" style="--i: 9"></div>
            <div class="blocks" style="--i: 10"></div>
            <div class="blocks" style="--i: 11"></div>
            <div class="blocks" style="--i: 12"></div>
            <div class="blocks" style="--i: 13"></div>
            <div class="blocks" style="--i: 14"></div>
            <div class="blocks" style="--i: 15"></div>
            <div class="blocks" style="--i: 16"></div>
            <div class="blocks" style="--i: 17"></div>
            <div class="blocks" style="--i: 18"></div>
            <div class="blocks" style="--i: 19"></div>
            <div class="blocks" style="--i: 20"></div>
            <h3>Loading</h3>
        </div>
    </section>
</body>
</html>
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
section{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #001d10;
    animation: animateBackgroundColor 10s linear infinite;
}
@keyframes animateBackgroundColor{
    0% {
        filter: hue-rotate(0deg);
    }
    100% {
        filter: hue-rotate(360deg);

    }
}
.loading{
    position: relative;
    width: 250px;
    height: 250px;
}
.loading .blocks{
    position: absolute;
    width: 8px;
    height: 25px;
    background-color: #050c09;
    left: 50%;
    transform: rotate(calc(18deg * var(--i)));
    transform-origin: 0 125px;
    border-radius: 8px;
    animation: animate 1.9s ease-in-out infinite;
    animation-delay: calc(0.05s * var(--i));
}
@keyframes animate {
    0%, 50%{
        background-color: #050c09;
        box-shadow: none;
    }
    50.1%, 100%{
        background-color: #0f0;
        box-shadow: 0 0 5px #0f0,
                    0 0 15px #0f0,
                    0 0 30px #0f0,
                    0 0 60px #0f0,
                    0 0 90px #0f0;
    }
}
h3{
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 2em;
    color: #0f0;
    letter-spacing: 2px;
    animation: loadingTextAnimation 2s ease-in-out infinite;
    animation-delay: -1s;
}
@keyframes loadingTextAnimation{
    0%, 50%{
        color: #050c09;
        text-shadow: none;
    }
    50.1%, 100%{
        color: #0f0;
        text-shadow: 0 0 5px #0f0,
                    0 0 15px #0f0
    }
}