.card-left{width:40%;display:inline-block}.card-right{width:60%;display:inline-block}.demo-split{height:70%;border-top:1px solid #dcdee2}.demo-split-pane{padding:10px}#classStudent{border:24px solid #fff;padding:5px 5px 70px 5px;height:100vh;overflow-y:auto}.breadCrumb{margin:0 0 0 10px}.breadCrumb /deep/ .el-breadcrumb__inner{font-size:20px}.export{margin-top:5px}.el-collapse{width:100%}