style:课程大作业样式优化

src/modules/viewer/components/work/courseWork.vue

@@ -221,6 +221,9 @@ p {
   padding: 20px 0 30px;
   font-size: 14px;
 }
+::v-deep .el-step__main {
+  overflow: hidden;
+}
 ::v-deep .el-form-item__label {
   font-weight: bold;
   line-height: 24px;