.com_block{
  margin: 60px auto 30px auto;
  width: 850px;
  padding-top: 16px;
  position: relative;
  border-top: 2px dashed #ddd;
  background-color: #f5f5f5;
}
.com_block_title{
  font-size: 20px;
  font-weight: bold;
  position: absolute;
  background-color:#d84a1e;
  top: -31px;
  color: #fff;
  border-top-right-radius: 10px;
  padding: 2px 16px 2px 10px;
}
.com_block_title_2{
	font-size: 20px;
	font-weight: bold;
	position: absolute;
	background-color: #d84a1e;
	top: -30px;
	color: #fff;
	border-top-right-radius: 10px;
	padding: 2px 16px 2px 10px;
	left: 291px;
}
.com_block_title_3{
	font-size: 20px;
	font-weight: bold;
	position: absolute;
	background-color:#d84a1e;
	top: -32px;
	color: #fff;
	border-top-right-radius: 10px;
	padding: 2px 16px 2px 10px;
	left: 572px;
}
.pic_block{
  width: 260px;
  height: 290px;
  margin: 4px 10px;
  float: left;
  position: relative;
}
.pic_title{
  position: relative;
  z-index: 2;
  height: 36px;
  font-size: 16px;
  font-weight: bold;
  background: #ffdb6e;
  width: 190px;
  padding: 2px 0 2px 6px;
}
.pic_title::after{
  content: "";
  border-width: 0 11px 11px 0;
  border-color: transparent #c1a757 transparent transparent;
  border-style:solid;
  top: 40px;
  left: 0;
  position: absolute;

}
.pic_title::before{
  content: "";
  border-width: 0 0 40px 10px;
  border-color: transparent transparent transparent #ffdb6e;
  border-style:solid;
  top: 0;
  right: -10px;
  position: absolute;
}
.pic_title_mark{margin-left: 2px;font-size: 28px;}
.pic_block img{
  z-index: 0;
  top:11px;
  left: 11px;
  position: absolute;
  width: 230px;
  height: 200px;
  border: 4px solid #fff;
  box-shadow: 1px 0 4px 2px #ccc;
  background: #fff;
}
.teacher_student{
  position: absolute;
  top: 225px;
  width: 100%;
  text-align: center;
}
.cl_bo{clear: both;}