You've got several ways to adjust the layout of page elements until they're to your liking. Tweak the settings until everything is right where you want it.
Layout: Choose between Fixed (you can specify the exact width of your site pages) or Stretchy (automagically fills the available screen space of your visitors).
Margins: Control the amount of space to the top and sides of your page elements.
Sections: Control the Width of the Header, Body, and Footer sections of your site/page.
Sidebars: Add content in a right or left sidebar element by turning that element ON.
Pinning: Pin your Header or Side Bar so it doesn't move as the viewer scrolls up or down the page.