Merge branch 'release_v4.0.1' of http://git.qmth.com.cn/examcloud-frontend/examcloud-admin-web into release_v4.0.1

src/modules/marking/views/Marking.vue

@@ -787,3 +787,8 @@ li {
   margin-top: -6px;
 }
 </style>
+<style>
+.altbox {
+  color: rgb(85, 191, 255);
+}
+</style>

src/modules/marking/views/TpMain.vue

@@ -170,7 +170,7 @@ export default {
             uuid +
             "','" +
             n +
-            '\')" target="_blank"><img class="photo-answer" src="' +
+            '\')" target="_blank"><img alt="加载中..." class="photo-answer altbox" src="' +
             url +
             '?x-oss-process=image/resize,m_lfit,h_200,w_200"/></a>'
         );
@@ -550,4 +550,7 @@ img {
 .viewPictureStyle {
   width: 74%;
 }
+.altbox {
+  color: rgb(85, 191, 255);
+}
 </style>