Auto-scaling content functionality was added to the Flex block, which helps to adapt in-block elements for devices with varying widths. This update provides a consistent change of elements ratio in blocks for mobile devices whose width is slightly larger or smaller than the one in the editor. 

With this feature's assistance, you can arrange elements according to your needs in the mobile version editor. If the screen size of the user’s smartphone differs from the one in the Weblium editor, the elements' size will be automatically changed according to the required resolution. You can also deactivate this feature in block settings by turning off the “Auto-scaling content” switch.