diff --git a/src/plugins/header/options/option/theme.less b/src/plugins/header/options/option/theme.less
index a56ecdeb..bc7a5e05 100644
--- a/src/plugins/header/options/option/theme.less
+++ b/src/plugins/header/options/option/theme.less
@@ -29,10 +29,9 @@
             background-color: @dark-theme;
           }
 
-          &-control {
-            &:before {
-              background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 9' xml:space='preserve'%3E%3Cpolyline points='0,0 8,8 16,0' fill='none' stroke='white' stroke-width='2'%3E%3C/polyline%3E%3C/svg%3E");
-            }
+          &-control svg {
+            stroke: @light-color;
+
           }
         }