Robo 2019 (Full) Remove Shadow Around Search Field on Header Bar
I'm using RoboHelp 2019 and producing Responsive HTML 5 help.
I'm trying to match the help design to that of the web based app. I would like to remove the shadow that appears on the Search field on the header bar, but can't find which .CSS the setting is stored.

Any ideas?
Many thanks in advance.
