.courseSection-list-wrap .ivu-btn-default{background-color:#b2b2b2;border-color:#b2b2b2;color:#fff}.courseSection-list-wrap .ivu-btn-default:hover{opacity:.9}.course-list-wrap .ivu-btn-default{background-color:#b2b2b2;border-color:#b2b2b2;color:#fff}.course-list-wrap .ivu-btn-default:hover{opacity:.9}