main>div {
    height: 100%;
}

main {
    position: absolute;
    margin: 0;
    top: 2rem;
    width: 100vw;
    height: calc(100vh - 3rem);
    height: calc(var(--vh) - 3rem);
}

html {
    -ms-overflow-style: none;
    /* for Internet Explorer, Edge */
    scrollbar-width: thin;
    /* for Firefox */
    overflow-y: scroll;
}

html::-webkit-scrollbar {
    display: none;
    /* for Chrome, Safari, and Opera */
}