选择封面页也改一下

src/views/ppt_manage/newVersion/pptEditor.vue

@@ -2,7 +2,7 @@
   <div class="page-wrap">
     <div class="index-wrap ppt-page-wrap flex-column">
         <div class="cover-wrap" @click="openChooseCover">
-            <div class="cover" :style="'background: no-repeat center/cover url('+firstPage.BackgroundImg+');background-color:#F2F6FA;'">
+            <div class="cover" :style="'background: no-repeat center/cover url('+firstPage.BackgroundImg+');background-color:#F2F6FA;background-size:100% 100%;'">
                 <img src="~@/assets/img/ppt_m/add_first.png" />
             </div>
             <p class="hint-text">选择封面页</p>

src/views/ppt_manage/newVersion/pptEnEditor.vue

@@ -2,7 +2,7 @@
   <div class="page-wrap">
     <div class="index-wrap ppt-page-wrap flex-column">
         <div class="cover-wrap" @click="openChooseCover">
-            <div class="cover" :style="'background: no-repeat center/cover url('+firstPage.BackgroundImg+');background-color:#F2F6FA;'">
+            <div class="cover" :style="'background: no-repeat center/cover url('+firstPage.BackgroundImg+');background-color:#F2F6FA;background-size:100% 100%;'">
                 <img src="~@/assets/img/ppt_m/add_first.png" />
             </div>
             <p class="hint-text">选择封面页</p>