.sem09_lecture{margin-bottom:80px}@media screen and (max-width:768px){.sem09_lecture{margin-bottom:60px}}.sem09_lecture dl:not(:last-child){margin-bottom:60px}.sem09_lecture dt{background-color:#f0f0f0;border-left:1px solid #707070;font-weight:700;margin-bottom:30px;padding:6px 19px}.sem09_lecture dd{line-height:1.625;margin:0}