Standardise table layouts
Standardise table layouts

• update colour variables to use semantic variables
• update borders, padding and margins
• update font mixin to correct size

https://www.pivotaltracker.com/story/show/75347872
Not sure of the agile planner ticket number/URL

kalleth/static,kalleth/static,alphagov/static,tadast/static,robinwhittleton/static,kalleth/static,robinwhittleton/static,tadast/static,alphagov/static,tadast/static,alphagov/static,kalleth/static,tadast/static,robinwhittleton/static,robinwhittleton/static