Hello,

Add this code to the Theme Settings > Custom CSS > Global> Custom CSS for mobile

body .wd-nav-mobile>li>a {
    color: #f1fff1 !important;
	  background-color:black;
}
body .wd-nav-mobile>li>a:hover {
    color: white !important;
	  background-color:black;
}

You can add the filters from Appearance > Widgets > Add the filters in the shop page widget area.
Follow this guide and setup the sidebar: https://xtemos.com/docs-topic/widgets-and-sidebars/

Best Regards