body,
html {
    /* background: url(https://i.imgur.com/mNjcSvH.jpg) no-repeat; */
    background-size: 100%;
    top: 0;
    left: 0;
    padding: 0;
    margin: 0;
    width: 100%;
    height: 100%;
}

.app {
    position: fixed;
    top: 10%;
    margin-left: calc(50% - 20%);
    width: 40%;
    max-width: 40%;
    height: 0%;
}

::-webkit-scrollbar
{
    width: 0px;
}

::-webkit-scrollbar-track-piece
{
    background-color: transparent;
    -webkit-border-radius: 6px;
}