The Yummy Bites theme provides several settings under the Main Header Setting to add and configure different Header elements for your website. You can access the Header Settings via Admin Dashboard > Appearance > Customize > General Settings > Main Header.
General Settings #

Header Search: Enable this option to display search icon on the site header.
Social Media Settings #

Show Social Media: Enable the blue button to display the Social media icons on the site header.
Open in a new tab: You can enable this option to open the added social network accounts in new tab.
Social Media Icons: Click on the eye icon to display/hide a social media icon on the site header.
