#update_log {margin:1rem 0;padding:0;background:#fff;border:1px solid #ccc;border-radius:2px;font-size:1.4rem;}
#update_log h4 {display:flex;justify-content:space-between;margin:0;padding:1.5rem;cursor:pointer;font-size:1.6rem;border-bottom:1px solid #ccc;}
#update_log h4 span.up {display:none;}
#update_log.expanded h4 span.down {display:none;}
#update_log.expanded h4 span.up {display:block;}
#update_log ol {display:none;list-style:none;padding:1rem;}
#update_log.expanded ol {display:block;}
#update_log li {margin:0;padding:0.5rem 1rem;}
#update_log .date {min-width:20%;font-weight:bold;color:#444;}

@media (min-width: 1080px) {
#update_log li {display:flex;}
}