Merge branch '1155-result-source-card-background-missing' into 'development'

Resolve "Result Source Card Background Missing"

Closes #1155

See merge request !1921

resources/less/metager/general/cards.less

@@ -16,4 +16,8 @@
     @media(min-width: @screen-small) {
         padding: 1rem;
     }
-}
\ No newline at end of file
+}
+
+.result-hoster>.card {
+    background-color: @background-color;
+}