Does this support loading htmls from urls and CSS urls in the htmls instead?

So I am thinking of making a light weight internet browser using JS.net, this library, and a svg library to load svg images on top of all the other images this supports but what if all the images to load, the CSS, even the js code I want to execute (after security checks of course), and any other information I need from urls. I might also plan for github flavored markdown for pages as well. For now all my program knows is the base urls the user asks to see.