/* ここに記述したCSSはすべての外装に反映されます */
#shbutton1 {
    font-size: 77%;
}
#shbutton1 a:hover {
    text-decoration: none;
    background: #999;
}

ruby {
  position: relative;
}

ruby rt {
  position: relative;
  top: 0.6ex;
}


#page-top {
    position: fixed;
    bottom: 5px;
    right: 5px;
    font-size: 77%;
    display:none;
}
#page-top a {
    background: #666;
    text-decoration: none;
    color: #fff;
    width: 30px;
    padding: 5px 0;
    text-align: center;
    display: block;
    border-radius: 5px;
}
#page-top a:hover {
    text-decoration: none;
    background: #999;
}