Add margin-bottom to classes .frame, .wdn-frame
Merge pull request #717 from skoolbus39/wdn-images

Add margin-bottom to classes .frame, .wdn-frame
Increased line-height for .wdn-alt-header
Merge pull request #718 from skoolbus39/wdn-headers

Increased line-height for .wdn-alt-header
Removed opacity from red navigation bar
Merge pull request #720 from skoolbus39/wdn-nav-opacity

Removed opacity from red navigation bar
Added a spectrum of neutral colors to be used for consistent UI. Note: the base text and heading text colors have also been modified to use these new colors.
Footer layout updates
Addresses @kabel’s color concerns
Add a label to the source code textarea for accessibility
Update button background color to the same as the blue wdn_notice box
Add selected attribute to indicate which option should be the default
Merge pull request #721 from saltybeagle/examples_pa11y

Accessibility (pa11y) fixes for the examples pages
Fix double-negative right margin for directly nested grid-sets