ol.lecture_material, ul.lecture_material{
 list-style: none;
 line-height: 1.3em;
 padding: 0px;
}

.lecture_group header{
  font-size: 110%;
  display: inline-block;
  vertical-align: top;
}

.lecture_group ol, .lecture_group ul{
  display: inline-block;
}

.lecture_note li{
 margin-bottom: 1em;
 overflow: auto;
}

.lecture_note li .attachment{
  display: block;
}

.lecture_note li .attachment img{
  vertical-align: top;
}