diff --git a/_posts/2018-12-07-welcome-to-jekyll.md b/_posts/2018-12-07-welcome-to-jekyll.md
index 377301c..6340b22 100644
--- a/_posts/2018-12-07-welcome-to-jekyll.md
+++ b/_posts/2018-12-07-welcome-to-jekyll.md
@@ -6,6 +6,7 @@ author: Jeffrey
 categories: jekyll
 banner: https://bit.ly/32PAjtM
 tags: jekyll theme yat
+sidebar: []
 ---
 
 You’ll find this post in your `_posts` directory. Go ahead and edit it and re-build the site to see your changes. You can rebuild the site in many different ways, but the most common way is to run `jekyll serve`, which launches a web server and auto-regenerates your site when a file is updated.
@@ -24,21 +25,6 @@ print_hi('Tom')
 {% endhighlight %}
 
 ## section 2
-### section 2.1
-### section 2.2
-#### section 2.2.1
-##### section 2.2.1.1
-#### section 2.2.2
-##### section 2.2.2.1
-
-123
-
-## section 3
-### section 3.1
-### section 3.2
-### section 3.3
-## section 4
-## section 5
 
 Check out the [Jekyll docs][jekyll-docs] for more info on how to get the most out of Jekyll. File all bugs/feature requests at [Jekyll’s GitHub repo][jekyll-gh]. If you have questions, you can ask them on [Jekyll Talk][jekyll-talk].