diff --git a/customize.dist/src/less2/include/markdown.less b/customize.dist/src/less2/include/markdown.less
index 717b49990..3943f128d 100644
--- a/customize.dist/src/less2/include/markdown.less
+++ b/customize.dist/src/less2/include/markdown.less
@@ -194,7 +194,7 @@
     pre > code {
         display: block;
         position: relative;
-        width: 90%;
+        width: 100%;
         margin: auto;
         padding: 5px;
         overflow-x: auto;