旧ppt修改返回按钮

src/components/pptEasyClass/index_old.vue

@@ -23,7 +23,7 @@
 
             <div
               @click.stop="back"
-              v-if="screenType!=2"
+              v-if="tType == 1 || screenType!=2"
             >
               <img src="../../assets/icon/newIcon/return.png" alt="" />
               <span style="color: #000">返回</span>