Tweak style
diff --git a/site/.vuepress/theme/styles/index.styl b/site/.vuepress/theme/styles/index.styl
index 678a541..89a416e 100644
--- a/site/.vuepress/theme/styles/index.styl
+++ b/site/.vuepress/theme/styles/index.styl
@@ -151,7 +151,7 @@
     text-decoration none
 
 code, kbd, .line-number
-  font-family source-code-pro, Menlo, Monaco, Consolas, "Courier New", monospace
+  font-family SF Mono, Menlo, Monaco, source-code-pro, Consolas, "Courier New", monospace
 
 p, ul, ol
   line-height 1.7
diff --git a/site/.vuepress/theme/styles/palette.styl b/site/.vuepress/theme/styles/palette.styl
index 5a686d2..6582ca8 100644
--- a/site/.vuepress/theme/styles/palette.styl
+++ b/site/.vuepress/theme/styles/palette.styl
@@ -1,2 +1,3 @@
 $contentWidth = 800px
-$homePageWidth = 960px
\ No newline at end of file
+$homePageWidth = 960px
+$sidebarWidth = 22rem