Element Settings
Type: The element type; for a layout, a Flexbox layout will always appear
Key: A unique element key; can only contain lowercase letters, numbers, and underscores.
Randomize elements: Randomize the order of the sub-elements when they are displayed in the webform.
Flexbox Settings
Align items: Determines the alignment for items in the layout
Next Step: Webform Glossary: Page Fields