you mean like this? https://www.w3schools.com/w3css/w3css_sidebar.asp
(if that isn't what you're looking for the site has a lot of other stuff, you can take a look!)
A tag can only be a single word, and can only contain letters and numbers.
Select the tags you would like to remove:
You are going to block this site. This will do the following:
Are you sure you want to do this?