diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index fb44791769..ee2d11d33b 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -4189,11 +4189,11 @@ infobar {
   &.question,
   &.warning,
   &.error {
-    &:backdrop, & {
+    &:backdrop > revealer > box, & > revealer > box {
       label, & { color: $fg_color; }
       background-color: if($variant == 'light', desaturate(lighten(invert($selected_bg_color), 45%), 30%), 
                         desaturate(darken(invert($selected_bg_color),40%), 70%));
-      border-color: lighten($borders_color, 10%);
+      border-bottom: 1px solid lighten($borders_color, 5%);
     }
 
     text-shadow: none;
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index aa85658ab3..22db0909be 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -1766,9 +1766,9 @@ infobar { border-style: none; }
 
 infobar.info, infobar.question, infobar.warning, infobar.error { text-shadow: none; }
 
-infobar.info:backdrop, infobar.info, infobar.question:backdrop, infobar.question, infobar.warning:backdrop, infobar.warning, infobar.error:backdrop, infobar.error { background-color: #44403b; border-color: #353535; }
+infobar.info:backdrop > revealer > box, infobar.info > revealer > box, infobar.question:backdrop > revealer > box, infobar.question > revealer > box, infobar.warning:backdrop > revealer > box, infobar.warning > revealer > box, infobar.error:backdrop > revealer > box, infobar.error > revealer > box { background-color: #44403b; border-bottom: 1px solid #282828; }
 
-infobar.info:backdrop label, infobar.info:backdrop, infobar.info label, infobar.info, infobar.question:backdrop label, infobar.question:backdrop, infobar.question label, infobar.question, infobar.warning:backdrop label, infobar.warning:backdrop, infobar.warning label, infobar.warning, infobar.error:backdrop label, infobar.error:backdrop, infobar.error label, infobar.error { color: #eeeeec; }
+infobar.info:backdrop > revealer > box label, infobar.info:backdrop > revealer > box, infobar.info > revealer > box label, infobar.info > revealer > box, infobar.question:backdrop > revealer > box label, infobar.question:backdrop > revealer > box, infobar.question > revealer > box label, infobar.question > revealer > box, infobar.warning:backdrop > revealer > box label, infobar.warning:backdrop > revealer > box, infobar.warning > revealer > box label, infobar.warning > revealer > box, infobar.error:backdrop > revealer > box label, infobar.error:backdrop > revealer > box, infobar.error > revealer > box label, infobar.error > revealer > box { color: #eeeeec; }
 
 infobar.info:backdrop, infobar.question:backdrop, infobar.warning:backdrop, infobar.error:backdrop { text-shadow: none; }
 
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index 6016682d3c..11b62a8c23 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -1782,9 +1782,9 @@ infobar { border-style: none; }
 
 infobar.info, infobar.question, infobar.warning, infobar.error { text-shadow: none; }
 
-infobar.info:backdrop, infobar.info, infobar.question:backdrop, infobar.question, infobar.warning:backdrop, infobar.warning, infobar.error:backdrop, infobar.error { background-color: #f1e6d9; border-color: #e4e1de; }
+infobar.info:backdrop > revealer > box, infobar.info > revealer > box, infobar.question:backdrop > revealer > box, infobar.question > revealer > box, infobar.warning:backdrop > revealer > box, infobar.warning > revealer > box, infobar.error:backdrop > revealer > box, infobar.error > revealer > box { background-color: #f1e6d9; border-bottom: 1px solid #d8d4d0; }
 
-infobar.info:backdrop label, infobar.info:backdrop, infobar.info label, infobar.info, infobar.question:backdrop label, infobar.question:backdrop, infobar.question label, infobar.question, infobar.warning:backdrop label, infobar.warning:backdrop, infobar.warning label, infobar.warning, infobar.error:backdrop label, infobar.error:backdrop, infobar.error label, infobar.error { color: #2e3436; }
+infobar.info:backdrop > revealer > box label, infobar.info:backdrop > revealer > box, infobar.info > revealer > box label, infobar.info > revealer > box, infobar.question:backdrop > revealer > box label, infobar.question:backdrop > revealer > box, infobar.question > revealer > box label, infobar.question > revealer > box, infobar.warning:backdrop > revealer > box label, infobar.warning:backdrop > revealer > box, infobar.warning > revealer > box label, infobar.warning > revealer > box, infobar.error:backdrop > revealer > box label, infobar.error:backdrop > revealer > box, infobar.error > revealer > box label, infobar.error > revealer > box { color: #2e3436; }
 
 infobar.info:backdrop, infobar.question:backdrop, infobar.warning:backdrop, infobar.error:backdrop { text-shadow: none; }