Changing header view in mobile mode

Hi Please help. I need to change how the header looks on a mobile phone. https://www.asphaltgroup.co.za/ There are two logos in the header. One on each side of the title of the site in normal desktop view, but i need the logos to be next to each other above the title when being viewed from a mobile phone. I also need the colors to change of the navigation menu when viewed from a mobile phone. Please assist if possible. Kind regards