style(success message): fixed different length of success message on scrolling

Author: farhan787

app/styles/modules/_settings.scss

@@ -113,11 +113,10 @@ body.settings #main-content.card {
     z-index: 2;
 
     @include respond-to('big') {
-      left: 50%;
-      margin: 0 0 0 -250px;
+      margin: 0px;
       position: absolute;
       top: 64px;
-      width: 500px;
+      width: 100%;
     }
 
     @include respond-to('small') {