rww {
    display: flex;
    flex-wrap: wrap;
    row-gap: 12px;
    font-size: 1.25em;
}
rw {
    display: inline-flex;
    margin: 0 5px;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}
ruby + ruby {
    margin-left: 0;
}
rtb {
    display: block;
    font-size: 0.6em;
    margin-top: -10px;
    margin-left: auto;
    margin-right: auto;
    width: fit-content;
    color: gray;
}
tl {
    margin: 20px 0;
    display: block;
}