diff --git a/static/style.css b/static/style.css
index 0b91defe91..fbbc8e83e9 100644
--- a/static/style.css
+++ b/static/style.css
@@ -57,7 +57,7 @@ body {
 }
 
 body {
-  font-family: "Helvetica Neue",Helvetica,"Lantinghei SC","Microsoft YaHei","微软雅黑","Hiragino Sans GB",SimSun,sans-serif;
+  font-family: "Helvetica Neue",Helvetica,"Microsoft YaHei","微软雅黑","Hiragino Sans GB",SimSun,sans-serif;
   line-height: 1.5;
   color: #888;
   font-size: 14px;
@@ -450,13 +450,13 @@ footer ul li > a {
   float: left;
 }
 
-.aside-container>ul>li {
+.aside-container > ul > li {
   overflow: hidden;
 }
 
 .aside-container li h4 {
   font-size: 16px;
-  font-weight: bold;
+  font-weight: 600;
   padding: 10px 0 10px 50px;
   margin: 0;
   color: #5C6B77;
@@ -599,6 +599,11 @@ footer ul li > a {
   margin: 0;
 }
 
+.markdown strong,
+.markdown b {
+  font-weight: 600;
+}
+
 .markdown > table {
   border-collapse: collapse;
   border-spacing: 0px;
diff --git a/style/themes/default/custom.less b/style/themes/default/custom.less
index 1d56540981..278f3e2457 100644
--- a/style/themes/default/custom.less
+++ b/style/themes/default/custom.less
@@ -10,7 +10,7 @@
 // ------ Base & Require ------
 @body-background        : #fff;
 
-@font-family            : "Helvetica Neue",Helvetica,"Lantinghei SC","Microsoft YaHei","微软雅黑","Hiragino Sans GB",SimSun,sans-serif;
+@font-family            : "Helvetica Neue",Helvetica,"Microsoft YaHei","微软雅黑","Hiragino Sans GB",SimSun,sans-serif;
 @code-family            : "PT Mono", Menlo, "Courier New", monospace;
 @text-color             : #666;
 @font-size-base         : 12px;