[Theme Horse Support Team]

Hi David,

%1$s and %2$s uses the first and second parameter of widgets and it is called dynamically. If you drag nav menu widget then it will display nav-menu similarly for others. If you like to change it to full width then you need to add your own div instead of using one-third then goto theme folder -> inc -> structure -> sidebar-extension.php on line no 73, 84 and 94, create a new div class and write the css for it at custom css or child theme’s style.css

Thank you!