* {
    margin: 0;
    padding: 0;
    -webkit-box-sizing: border-box;
            box-sizing: border-box;
    line-height: 1;
}

body {
    background-color: rgb(0, 0, 0);
}

*, html, body {
    -ms-scroll-chaining: none;
        overscroll-behavior: contain;
    -webkit-text-size-adjust: 100%;
       -moz-text-size-adjust: 100%;
        -ms-text-size-adjust: 100%;
            text-size-adjust: 100%;
}

#app {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    overflow: hidden;
}