Updates card styles to use grid instead of flexbox and documents how to set the number of card columns. Our use of cards in sites is not agnostic about how many columns of cards there are, so this seemed like a better approach, although it requires media queries to be added in local styles...
Corrects p and a styles to align with what we already have implemented in DIMES and rockarch.org
Adds an input__help-text class for form inputs that matches the DIMES styles.
Other small adjustments to header, footer, checkbox, and list styles to correct problems found during DIMES styles implementation.
pandastyles to align with what we already have implemented in DIMES and rockarch.orginput__help-textclass for form inputs that matches the DIMES styles.