.course-index{width:100%}.course-index .course_top{height:57px;background-color:#5098eb;border-radius:0 0 7px 7px}.course-index .course-open{margin:20px 20px 20px 20px;-webkit-box-shadow:0 6px 6px 2px #d8e5f5;box-shadow:0 6px 6px 2px #d8e5f5}.course-index .course-open .openList{background:#fff}