Let’s navigate to Appearance (WP Dashboard) > Customize to flexibly control the appearance and behavior of the whole website.
Moreover, you can see the changes of the front-end right after the alterations – when the needed parameter is selected, without switching from admin to front-end each time. When you are done with the changes, you should click on Publish button at the top of the Customizer’s side menu.

Note!
Please be aware that our theme provides a special inheritance hierarchy system for “Theme Options” settings. It means that individual settings of each page may override global settings made with Customizer Panel.