e {
            content: "";
            position: fixed;
            left: 0;
            right: 0;
            z-index: -1;
            display: block;
            background-image: url("https://betanews.com/wp-content/uploads/2015/09/Windows-10-lock-screen.jpg");
            background-repeat: no-repeat;
            background-size: 100vw 100vh;
            width: 100vw;
            height: 100vh;
            -webkit-filter: blur(20px);
            -moz-filter: blur(20px);
            -o-filter: blur(20p