diff --git a/src/bullet_threading.scss b/src/bullet_threading.scss
index cb274dd..f078af1 100644
--- a/src/bullet_threading.scss
+++ b/src/bullet_threading.scss
@@ -1,6 +1,6 @@
 :root {
   --ls-block-bullet-active-color: var(--ls-link-text-color);
-  --ls-block-bullet-threading-width: 1px;
+  --ls-block-bullet-threading-width: var(--ls-block-bullet-threading-width-overwrite, 1px);
 }
 
 .block-control {