body {
    width: 300px;
    height: 310px;
    margin: 0 !important;
}
body .bgmask {
    width: 100vw;
    height: 100vh;
    position: fixed;
    z-index: -8;
    background-image: linear-gradient(#0000 50%, #04254e);
}

body .bggatter {
    width: 100%;
    height: 100%;
    position: absolute;
    z-index: -9;
    -webkit-mask-image: url("../image/grid.png");
    background-color: #5954a4;
}

body .bggatter__wrapper {
    width: 100vw;
    height: 100vh;
    position: fixed;
    overflow: hidden;
    z-index: -9;
}

body .bgdrop {
    width: 100vw;
    height: 100vh;
    position: fixed;
    z-index: -10;
    background-color: #04254e;
}