Fix summary background color in IE6
Fix summary background color in IE6

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