diff --git a/src/packages/markdown-preview/stylesheets/markdown-preview.css b/src/packages/markdown-preview/stylesheets/markdown-preview.css
index 5d58e2de7..1138dc1b7 100644
--- a/src/packages/markdown-preview/stylesheets/markdown-preview.css
+++ b/src/packages/markdown-preview/stylesheets/markdown-preview.css
@@ -1,10 +1,13 @@
 .markdown-preview {
+  font-family: "Helvetica Neue", Helvetica, sans-serif;
+  font-size: 14px;
+  line-height: 1.6;
   position: absolute;
   width: 100%;
   height: 100%;
   top: 0px;
   left: 0px;
-  background-color: #F4F4F4;
+  background-color: #fff;
   overflow: auto;
   z-index: 3;
   box-sizing: border-box;
@@ -12,14 +15,7 @@
 }
 
 .markdown-body {
-  background-color: #fff;
-  box-shadow: rgba(0, 0, 0, 0.1) 0 0 0 1px,rgba(0, 0, 0, 0.3) 0 1px 3px;
-  border-radius: 5px;
-  max-width: 914px;
   min-width: 680px;
-  margin-left: auto;
-  margin-right: auto;
-  padding: 30px;
 }
 
 .markdown-body pre,