.aspectration{
	position: relative;
	height: 0;
	width: 100%;
	padding-top: 75%;
}
.aspectration > * {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
}
#avatar_img{
	border-radius: 50%;
	width: 40px;
	height: 40px;
    margin-left: 2px;
}
#logo_top{
    width: 68px;
    height: 68px;
}
#slogan_0{
    line-height: 68px;
    color: #333;
    font-size: x-large;
    font-family:"微软雅黑";
    letter-spacing:3px;
    text-align: center;
    margin-left: 10px;
}

.LT_to_RB{
  width:40px;
  height:40px;
  background:linear-gradient(45deg,transparent 49.5%, #BBB 49.5%, #BBB 50.5%, transparent 50.5%);
  background-color: #FFF;
  margin-top: -1px;
}
.LB_to_RT{
  width:40px;
  height:40px;
  background:linear-gradient(-45deg,transparent 49.5%, #BBB 49.5%, #BBB 50.5%, transparent 50.5%);
  background-color: #FFF;
  margin-top: -1px;
}
#Line_Bottom{
  height: 40px;
  width: 100px;
  border-bottom: 1px solid #DDD;
  background-color: #FFF;
  margin-top: -1px;
}

.box-work-course{
    padding: 8px;
    background-color: #FFF;
    box-shadow:2px 2px 5px #888;
}
.zhuangqu-go{
	margin: 15px auto ;
}
.zhuangqu-go:hover{
	border-bottom-right-radius: 5px;
	border-bottom-left-radius: 5px;
}
.author-avatar{
    width: 32px;
    height: 32px;
    border-radius: 3px;
}
.author-nn{
    margin-left: auto;
    margin-right: 3px;
    line-height:32px;
    color: #FFB800;
}
.o{
    overflow: hidden;
    text-overflow:ellipsis;
    white-space: nowrap;
}



.课时标题{
    color: #333;  display:flex; height: 60px; background-color: #EEE;
}
.课时标题:hover{
    color: #F72;
}
.小标题{
    margin: 10px 0 5px 0;
    color: #F72;
    font-weight: bold;
}
.小内容{
    font-size:smaller;
    word-wrap:break-word;
    word-break:normal;
}
.fa{
    font-size:x-large;
    padding-top: 6px;
}