YouTube embedded video will not display in the mobile view
If you are using Blogger to host your site it is a simple fix.
Change the pencil icon (Compose view) in the top left of your post to < > HTML view.
Use find or replace to remove the following from the code.
class="BLOG_video_class"
Center your Tab Text and Blog Title
Add the following lines under Theme > Customize > Advanced > Add CSS (drop down)
Center Tab Text
.PageList {text-align:center !important;}
.PageList li {display:inline !important; float:none !important;}
Center Blog Title
.post-title {text-align:center;}