title: How would I set this up?
body: <p>Basically I want a webpage where when it loads it shows the sign up screen. But then when the user scrolls down they'll see more stuff. I want to "mask" the bottom part so that then the user doesn't see it if they don't scroll down.I'm not sure what I should Google to find results. How would I go about on setting this up? Would I use margins? Its in HTML and CSS by the way.</p>