SIZES & VALUES
Site Width - set the width of the site content area including the canvas padding.
Canvas Padding - control the amount of spacing around the inside of the canvas area.
Top Padding - adjusts the amount of spacing at the top of the site, outside the canvas area.
Navigation Link Spacing - sets the relative amount of spacing between each navigation link.
Header Padding - control the amount of spacing at the bottom of the header area, below the site title and navigation.