Use CSS to position caption.
Use CSS to center logos.
Use CSS to space hint.

em is a horizontal unit.  ex is the appropriate font-relative vertical
unit.
Send general inquiries to general site.
Fix grammar and validation.
Add a link to MJ's SlideShare presentation on DM
Change navbar alignment
Merge branch 'pr/6'

Conflicts:
	index.html
Change the positioning of the main caption

Make it appear a bit lower.