Fix 修复后台选择培训营页面背景不显示问题

SourceCode/WeApp.Web/Views/Train/_Select.cshtml

@@ -5,7 +5,11 @@
 }
 <style>
     .content-wrapper {
-        padding: 0!important;
+        padding: 0 !important;
+        background-image: url(/Content/Image/ExerciseV2/bg.jpg);
+        background-repeat: no-repeat;
+        background-size: 100% 100%;
+        overflow: hidden;
     }
     .body {
         width: 100% !important;