diff --git a/resources/www/lightbox/styles/main-mobile.scss b/resources/www/lightbox/styles/main-mobile.scss
index 424fe29311..a3476342d9 100644
--- a/resources/www/lightbox/styles/main-mobile.scss
+++ b/resources/www/lightbox/styles/main-mobile.scss
@@ -4,13 +4,13 @@
   width: 90%;
   margin: 0px auto;
   padding: 4px;
-  ui-btn {
+  .ui-btn {
     height: 36px !important;
     width: 36px !important;
     font-size: 16px !important;
     border-radius: 19px;
   }
-  ui-btn::after {
+  .ui-btn::after {
     height: 30px !important;
     width: 30px !important;
     margin-left: -15px;