@media only screen and (max-width: 800px) {
    section#info_pane {
        height: 4.5em;
        overflow: clip;
        left: 0;
        bottom: 0;
        right: 0;
        top: unset;
        width: 100%;
        transition: 0.3s ease;
    }

    section#content_pane {
        width: 100vw;
        height: calc(100vh - 4.5em);
    }

    iframe#content_frame {
        width: 100vw;
    }

    section.game-box {
        width: calc(100vw - 6.5em);
        height: calc(100vw - 6.5em);
        margin-right: 0;
        margin-bottom: 1em;
    }

    section.game-box-caption {
        width: 100vw;
    }

    section#info_pane:active, section#info_pane:hover, section#user_info {
        height: 12em;
    }

    section.challenge {
        width: calc(100vw - 3em);
    }

    section.answer label {
        max-width: 80%;
    }

    section#infobox {
        top: unset;
        left: 0;
        right: 0;
        bottom: 0;
        max-height: 4em;
        min-height: unset;
        transition: 0.3s ease;
    }

    section#infobox:active, section#infobox:hover {
        max-height: 50vh;
    }

    section#test_display {
        position: fixed;
        display: block;
        top: 0;
        bottom: 6em;
        left: 0;
        right: 0;
        overflow: scroll;
        padding-top: 2em;
    }

    section.window {
        width: calc(100vw - 2em);
        padding: 1em;
        max-height: calc(100vh - 2em);
    }

    td {
        display: block;
    }
}