Merge pull request #9712 from overleaf/td-galileo-notification-close-button

Improve styling of Galileo notification close button

GitOrigin-RevId: faf0a4180f4f3e837bd4f2302e2689aa4dd1564e

services/web/frontend/stylesheets/app/editor.less

@@ -597,10 +597,33 @@ CodeMirror
   z-index: 10;
   display: flex;
   justify-content: space-between;
-  align-items: center;
   padding: 5px 10px;
 }
 
+.references-search-banner {
+  align-items: center;
+}
+
+.bibtex-hint-banner {
+  align-items: flex-start;
+
+  .bibtex-hint-close {
+    color: inherit;
+    margin-left: 10px;
+    font-size: 24px;
+    padding: 0;
+    line-height: 1;
+    border-radius: 0;
+
+    &,
+    &:hover,
+    &:focus,
+    &:active {
+      background-color: transparent;
+    }
+  }
+}
+
 // -- References Search Modal --
 .references-search-modal-backdrop {
   // don't grey out the editor when the