.course-box{height:212px}.course-box a{border:1px solid #dedede;display:block}.course-box a:hover{text-decoration:none}.course-box a .cover{width:100%}.course-box a .course-info{padding:10px}.course-box a .course-info .course-name{font-size:14px;height:30px}.course-box a .course-info .teacher{font-size:12px;padding-top:10px}