What is Layouts?
Introduction
Layouts are the static common elements on any page of a Storefront, such as Sidebar, Top Navigational bar, etc.
How to add new elements?
Click on the "+" symbol beside Layouts to create a new file > Save the file using Submit > Paste the code on the editor > Save
To edit an existing layout, click on the intended file name to open the editor > Edit the code and Save.