diff --git a/src/plugins/shikiCodeblocks/shiki.css b/src/plugins/shikiCodeblocks/shiki.css
index 2051183..32ef992 100644
--- a/src/plugins/shikiCodeblocks/shiki.css
+++ b/src/plugins/shikiCodeblocks/shiki.css
@@ -44,6 +44,7 @@
 .shiki-btn {
     border-radius: 4px 4px 0 0;
     padding: 4px 8px;
+    user-select: none;
 }
 
 .shiki-btn ~ .shiki-btn {