Adding sub page template.
Less aggressive header tag styling.
Makes back links smaller.
Page heading style.
Responsive back styling.
Beginners intro styling and text update.
Fixes back link on sub-page template.
Fixes math in comment.
More spacing for back link.
Updates back link placement and changes anatomy back link.
Fixes spacing.
Changed to use sub-page template.
Moves description.
Makes description in sub-page optional.
Testing copy edits.
Use includes for the sub-page template.
Uses new sub-page template.
Abstract beginners message into an include.
Adds header include to page template.
Merges templates into one smart template.