diff --git a/frontend/src/css/styles.css b/frontend/src/css/styles.css
index 00442507..f38f6b63 100644
--- a/frontend/src/css/styles.css
+++ b/frontend/src/css/styles.css
@@ -152,7 +152,7 @@ main .spinner .bounce2 {
 /* PREVIEWER */
 
 #previewer {
-  background-color: rgba(0, 0, 0, 0.9);
+  background-color: rgba(0, 0, 0, 0.99);
   padding-top: 4em;
   position: fixed;
   top: 0;