The Icons section offers settings to replace four of the default North icons with your own. If you’d like to use SVG icons in this section you’ll first need to add SVG support to WordPress by installing and activating the SVG Support plugin. The easiest way to install this plugin is to go navigate to PluginsAdd New and search for SVG Support in the top right search field.
Mobile Menu Icon
 Upload a custom responsive menu icon.
Masthead Search Icon
 Upload a custom header search icon.
Close Search Bar Icon
 Upload a custom close icon used in the header search bar.
Scroll to Top Icon
 Upload a custom scroll to top icon.