eStore has robust customization options which users can achieve without any custom code. Some basic options are provided in the eStore free theme, whereas more advanced customization options are available on Pro Version. You can change the layout, add new elements, or even tweak it’s design to create something entirely new. This theme gives you a wide array of tools to customize, or make small tweaks to the layout without needing to manually edit the source code. As all the content part of your site is customizable using the WordPress editor, everything else can be customized by navigating to Appearance > Customize.
To enhance the structure of the site you can change the title, menu, the site slider, and other features like the logo and favicon. You can also change the page structure and can be edited to change how the page content is displayed. Ideally, it has the loop and other features depending on the kind of page. There are various option to display pages; like you can have a full width page and a page with sidebar. Furthermore, colors and layouts can be changed. New features can be added like an additional sidebar on a theme, a new widget area, an extra footer widget, a new logo section in the header and so on.
This theme contains a number of options to customize the Header on your page.
Location: Appearance > Customize > Header Options
These options are shown in the image below: