.index {
    background-color: #e7fa19;
    color: black;
    font-family: Verdana;
    font-size: 1.2vmin;
    overflow: hidden;
}
.index .bound {
    color: #e7fa19;
    background-color: black;
}
.index .top-right {
    position: absolute;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    color: black;
    top: 0;
    right: 0;
    font-size: 1vmin;
    font-family: monospace;
    font-weight: bold;
    text-align: right;
    height: 70dvh;
}
.index .overlay {
    color: #e8d8c9;
}
.index .overlay:hover {
    color: transparent;
}
@media screen and (orientation: portrait) {
    .index {
        font-size: 1.2vmax;
    }
}