Layout Builder Knowledge Base Layout Builder How to set up different columns for responsiveness How to hide elements on mobile and tablets How to import and export builder elements How to create new sidebars and use them in the builder How to create a custom footer area How to make responsive layouts with elements How to create Foodbook homepage using the builder How to add shape dividers for rows and columns How to change the text color for builder elements automatically How to extend content fullwidth instead of centered How to add category filters to post views How to remove/change the demo banners I get a Warning: getimagesize() error after import How to create a fullscreen row with a background video How to export and import a whole builder-based page