I’ve suggested some basic tutorials in your other thread, @andreigames9.
The general picture here would be to create two containers for Content and News (using <div>, <section> or whichever HTML tag is most appropriate) , and then use CSS to assign widths to one or both and position them.
As with all things HTML/CSS, there is more than one way to achieve this, but without knowing a lot more about the page, the actual content, etc., it’s not really possible to offer a “best” solution.