diff --git a/web/annotation_editor_layer_builder.css b/web/annotation_editor_layer_builder.css
index 567a0801a..dc7104518 100644
--- a/web/annotation_editor_layer_builder.css
+++ b/web/annotation_editor_layer_builder.css
@@ -254,7 +254,9 @@
         width: var(--resizer-size);
         height: var(--resizer-size);
         background: var(--resizer-bg-color);
+        background-clip: content-box;
         border: var(--focus-outline-around);
+        border-radius: 2px;
         position: absolute;
 
         &.topLeft {