How do I resize the browser for my project in Construct 2?

How do I resize the browser for my project in Construct 2?

For example, I have a screen of 800 x 600 and I want the browser to access the internet using only the size of 600 x 450 and the rest of the space I can put a logo. Or I would make the browser to show the site accessed by a sprite that I created in the project. Sorry for my english.

make the browser to show the site accessed by a sprite that I created in the project.