With CSS making progress bar

<!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>
        body {
            background-image: linear-gradient(to right top, #ffcc00 50%, #eee 50%);
            background-repeat: no-repeat;
        }

        body::after {
            content: "";
            position: fixed;
            top: 5px;
            left: 0;
            bottom: 0;
            right: 0;
            background: #fff;
            z-index: -1;
        }
    </style>
</head>
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<body>

</body>

</html>
With CSS making progress bar

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