app/static/css/editor.css

@@ -34,8 +34,7 @@
 .editor .btn-group .separator {
   display: inline-block;
   width: 0;
-  border-left: 1px solid #d9d9d9;
-  border-right: 1px solid #ffffff;
+  border: 1px solid var(--text);
   color: transparent;
   text-indent: -10px;
 }
@@ -80,4 +79,4 @@
     transform: translateX(-50%);
     top: 50vh;
   }
-}
+}