Reply To: Need some help with the header – slider section

Hello,

01. Navigate to Theme Settings > General > Promo popup > disable promo popup.

02. Your whole checkout page background color is black. And your page title background color is gray. If You want to change the page title color, You can change the page title background color from Pages > Edit page > In the bottom of the page settings change the background color of the page title area.

Best Regards.