html_css_intro:edits to nav,text colors; also edited topic links
html_css_intro: added comments & rearranged styles.css
html_css_intro: added link to google fonts
html_css_intro: +body default font, +nav & footer alignment & font changes
html_css_intro: gallery layout edits, img layout set to two colums
html_css_intro: cleared footer, +styles to header, changed nav display
html_css_intro: made nav items easier to click/read
Merge branch 'gallery-improvements' into develop