diff --git a/problems/0028.实现strStr.md b/problems/0028.实现strStr.md
index ff13db39..b18131f3 100644
--- a/problems/0028.实现strStr.md
+++ b/problems/0028.实现strStr.md
@@ -780,7 +780,7 @@ class Solution:
 class Solution:
     def strStr(self, haystack: str, needle: str) -> int:
         return haystack.find(needle)
-       
+```       
 
 Go：