.xueke header{ width:100%; display: -webkit-flex;display: flex;flex-wrap:wrap;justify-content:space-between;}


   .xueke header h2,  .xueke header div,  .xueke header p{ width:100%;  }
 
.xueke{ margin:10px auto; margin-bottom:30px; width:1100px; border:solid 1px #EDEDED; min-height:300px;display: -webkit-flex;display: flex; justify-content:space-between;}
 
.xkname{text-align:center;  width:100%; }
.xkname>a{font-size:20px; text-align:center; display:inline-block; width:100%; line-height:30px;height:30px;}
.xkname+div,.xkname+div img{ width:100%; height:150px;}


.xkname+div{ margin:10px auto;}

.xkname+div img{height:142px; border-radius:10px;}
.xkname+div a{ line-height:25px; letter-spacing:1px;}
.xueke>div,.xueke>header{width:300px; height:300px;}
 
.xknr{width:500px;height:300px; display: -webkit-flex;display: flex;flex-wrap:wrap;justify-content:space-between;align-items:center;}

.tzhref{ display:inline-block; text-align:center; width:100%; font-size:18px;  height:30px; margin-top:10px; color:#778788;}
.tzhref:hover{ color:Red;}

/*学科内容*/
 .xknr li{ line-height:28px; height:28px; width:100%;}
 .xknr li:nth-of-type(5){ margin-bottom:10px; border-bottom:solid 1px #DCDCDC; padding-bottom:10px;}
 
 .xknrnav {display: -webkit-flex;display: flex; justify-content:space-around; flex-wrap:wrap;width:250px; height:300px;}

 .xknrnav li{ width:100%; text-align:center;}
   .xknrnav li:first-child{ font-size:16px; font-weight:bold;}