diff --git a/CSS/themes/calibreweb/calibreweb-base.css b/CSS/themes/calibreweb/calibreweb-base.css
index 690d0809..e5e1a8fc 100644
--- a/CSS/themes/calibreweb/calibreweb-base.css
+++ b/CSS/themes/calibreweb/calibreweb-base.css
@@ -21,6 +21,9 @@ body:not(.read-frame) {
 .blur-wrapper:after {
     background: var(--modal-bg-color) !important;
 }
+body>.container-fluid {
+    background: var(--main-bg-color);
+}
 body.login:not(.read-frame), body.shelfcreate, body.shelfedit {
     background: var(--color-background) !important;
 }
@@ -28,4 +31,4 @@ body.login:not(.read-frame), body.shelfcreate, body.shelfedit {
     .navbar-collapse.collapse {
         background: var(--modal-bg-color) !important;
         }
-    }
\ No newline at end of file
+    }