demo/hue-rotate-demo1.html

﻿<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style>
    #splash {
        position: fixed; 
        bottom: 0; left: 0; right: 0; top: 0; 
        z-index: -1;

        animation: rotate 15s alternate infinite;
        background: url("https://s2.ax1x.com/2019/05/13/E5VSLd.png") no-repeat center center fixed;
        background-size: cover;
    }

    @keyframes fadeIn {
        from {
            opacity: 0;
        }

        to {
            opacity: 1;
        }
    }

    @keyframes rotate {
        from {
            filter: hue-rotate(0deg);
        }

        to {
            filter: hue-rotate(360deg);
        }
    }
    </style>
</head>

<body>
    <div id="splash"></div>
</body>

</html>