diff --git a/docs/uni-app-x/css/border-bottom-width.md b/docs/uni-app-x/css/border-bottom-width.md
index 3397d7fda767af9a044a68161560bfc7a44f2af7..470cb5caafec93d5ab37ee6fd0b0f17a9ead1a53 100644
--- a/docs/uni-app-x/css/border-bottom-width.md
+++ b/docs/uni-app-x/css/border-bottom-width.md
@@ -9,8 +9,11 @@
 
 <!-- CSSJSON.border-bottom-width.defaultValue -->
 
+**注意**  
+HBuilderX3.92及以前版本app-uvue页面默认值为0px。 
+
 <!-- CSSJSON.border-bottom-width.unixTags -->
 
 <!-- CSSJSON.border-bottom-width.compatibility -->
 
-<!-- CSSJSON.border-bottom-width.reference -->
\ No newline at end of file
+<!-- CSSJSON.border-bottom-width.reference -->