Fix attachments drop box

frontend/app/components/work-packages/wp-single-view/wp-single-view.directive.html

@@ -116,12 +116,14 @@
 
     <wp-attachment-list work-package="$ctrl.workPackage"></wp-attachment-list>
     <wp-attachments-upload work-package="$ctrl.workPackage">
-      <div class="work-package--attachments--label">
-        <i class="icon-attachment"></i>
-        <p>
-          {{ ::$ctrl.text.dropFiles }} <br>
-          {{ ::$ctrl.text.dropFilesHint }}
-        </p>
+      <div class="work-package--attachments--drop-box">
+        <div class="work-package--attachments--label">
+          <i class="icon-attachment"></i>
+          <p>
+            {{ ::$ctrl.text.dropFiles }} <br>
+            {{ ::$ctrl.text.dropFilesHint }}
+          </p>
+        </div>
       </div>
     </wp-attachments-upload>
   </div>