I think you'll probably want to remove those font-size adjustments and re-assess afterwards. You'll find that the majority of the redesign is indeed sized with ems, including all text sizes. You'll also want to adjust #header_wrapper to position:absolute if you deice that you're not going to use the settings to disable the fixed header behaviour - setting static without adjusting the settings will be unpleasant. To be safe, in case you want to play with the header settings later, you probably want to actually make that selector `.set-header--fixed .header-wrap { position: absolute' }`