rb {
    font-size: 100%;
    background: #eee;
    color: black;
}

rp {
    display: none;
    background: #eee;
}

rt {
    font-size: 60%;
    color: black;
}

ruby {
    display: table;
    font-size: 150%;
    ruby-align: center;
}

ruby * {
    display: inline;
    line-height: 32pt;
    margin: 0;
    padding: 0;
    position: static;
    text-indent: 0;
    text-align: left;
    white-space: nowrap;
}