Did you install WordPress in a subdirectory because you wanted total control of your website's front page but now you're building pages off that front page and you don't want to go through the hassle of manually styling and managing all of them? Me too. Fortunately, you can still use WordPress to build those pages. And as for displaying them as if they were separate from the WP subdirectory...
Have you seen those websites with a prominent menu item that draws your eye and makes you immediately want to buy a bunch of books? Well, I have, and I wanted one of those for my website. I thought it would be as easy as adding a class and some styling, but WP doesn't actually allow you to set a class in the menu builder. Instead, it does the work for you. Let's take a look.