Hi Phil….first, I noticed you probably left “no title” in the page’s title field to not show a title? If so, use a plugin called “Hide Title” and this will give you a setting on your page editor to disable titles for any page.
As for the extra white space, this is done from line 515 of the theme’s style.css file:
padding: 4em 0;
That puts a 4em padding on the top and bottom of the content wrapper container. You can override that doing your own custom CSS to what works best for you.