<style>
        #page-loader {
            position: absolute;
            height:100vh;
            width: 100%;
            background: #000000;
            z-index: 100;
        }
        .loader.center {
            border-radius: 20px;
            background: #ffffff;
            width: 100px;
            height: 100px;
            position: absolute;
            left: 50%;
            top: 50%; 
            margin-left: -50px;
            margin-top: -50px;
        }
        .loader.center>img {
            width: 48px;
            height: 48px;
            position: absolute;
            left: 50%;
            top: 50%; 
            margin-left: -24px;
            margin-top: -24px;
        }
</style>