PreviewCourse.vue booknpc 和 bookrlc 增加 :is-answer-item-show=true 传参

src/components/preview/PreviewCourse.vue

@@ -8,6 +8,7 @@
           task-model=""
           :is-show-save="false"
           :is-show-title="false"
+          :is-answer-item-show="true"
           :context="context"
           :theme-color="themeColor"
           :preview-type="previewType"
@@ -35,6 +36,7 @@
           :theme-color="themeColor"
           :is-show-save="false"
           :is-show-title="false"
+          :is-answer-item-show="true"
           :book-font-size="bookFontSize"
           :current-tree-i-d="fileId"
           :preview-type="previewType"

src/views/teacher/create_course/step_three/index.vue

@@ -178,8 +178,8 @@ $basic-background-color: #f7f7f7;
 
         &[contenteditable='true'] {
           color: #fff;
-          background-color: #628fd3;
           caret-color: $basic-color;
+          background-color: #628fd3;
         }
       }