fix bug: support custom css from user

sample.md

@@ -4,8 +4,25 @@ Some `inline code` with *italic* and **bold** text.
 
 ```python
 import this
-if you('are', 'curious'):
+if you is moods.curious:
     print('then do it!')
 ```
 
 <kbd>ctrl+\`</kbd> or *View → Show Console* and paste `import this`!
+
+> Perfect programmers do NOT need comments.
+
+- to be efficient
+- you need
+- todos
+
+![Sublime Text Logo](https://upload.wikimedia.org/wikipedia/en/4/4c/Sublime_Text_Logo.png)
+
+Some plugin I just *need*:
+
+- [PackageResourceReviewer](https://packagecontrol.io/packages/PackageResourceViewer)
+- [Boxy Theme](https://packagecontrol.io/packages/Boxy%20Theme)
+- [Markdown Preview](https://packagecontrol.io/packages/Markdown%20Preview)
+- [FileManager](https://packagecontrol.io/packages/FileManager)
+- [PlainTasks](https://packagecontrol.io/packages/PlainTasks)
+- [JSONComma](https://packagecontrol.io/packages/JSONComma)