app/assets/stylesheets/spree/backend/components/_messages.scss in solidus_backend-1.0.7 vs app/assets/stylesheets/spree/backend/components/_messages.scss in solidus_backend-1.1.0.beta1

@@ -23,18 +23,21 @@
       font-weight: $font-weight-bold;
     }
   }
 }
 
-.flash, .alert {
+.flash-wrapper {
   position: fixed;
   top: 0;
   left: 0;
   width: 100%;
+  z-index: 1000;
+}
+
+.flash {
   padding: 16px;
   text-align: center;
-  z-index: 1000;
   font-size: 120%;
   color: $color-1;
   font-weight: $font-weight-bold;
 
   &.notice  { background-color: rgba($color-notice,  0.8) }
@@ -49,6 +52,6 @@
   a {
     text-decoration: underline;
   }
 
   &.error a { color: very-light($color-error, 10) }
-}
\ No newline at end of file
+}