As you've probably noticed by now, when you add design elements to one version of the design, be it mobile or desktop, they are added to both versions of the site design. These elements can be controlled almost completely independently and you can learn more about that here

This article will specifically show you the toggle switches which help you show/hide design elements on the respective version of the site (Desktop or Mobile) you wish to show or hide it on. 

As you can see in the example below, we have three elements on the "shapes" canvas, which are all shapes. The black square is set to display on both desktop and mobile designs. The blue line only shows on the desktop version, and the grey circle only shows on the mobile design. The toggle switch settings to the left of the element layers in the let sidebar pictured below match what you see in the builder. 

It is truly that easy to customize your mobile and desktop designs by hiding or showing elements with toggle switches! Happy designing. 

More Help Articles 

Mobile vs Desktop Design
Mobile Layout Assistance 

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