For the complete documentation index, see llms.txt. This page is also available as Markdown.
Screens
Manage breakpoints and container widths
Screens defines the responsive breakpoints and container widths used throughout the project. Components with responsive controls inherit these screen sizes.
Each screen can define a breakpoint, a container width, and whether that breakpoint is active.
Default Breakpoints
Screen
Starts at
Typical use
Mobile
Below SM
Base design for phones and all smaller widths
SM
640px
Large phones and small tablets
MD
768px
Tablets
LG
1024px
Laptops and smaller desktops
XL
1280px
Wide desktop layouts
2XL
1536px
Extra-wide desktop layouts
Mobile is the base screen and does not need its own minimum width. Values set at Mobile apply everywhere until they are overridden at a larger enabled breakpoint.
Configure a Screen
For each named screen:
Breakpoint — Sets the viewport width at which the screen begins.
Container — Sets the project-wide maximum container width at that screen. Auto keeps Mobile fluid and uses the screen width for the named breakpoints; choose a custom value when the layout needs a narrower content width.
Enabled — Makes the breakpoint available to responsive component controls. Disable breakpoints you do not intend to design for.
Keep breakpoint values in ascending order. A larger screen should not begin before the screen listed above it.
Most projects do not need every breakpoint. A smaller set of deliberate breakpoints is often easier to maintain than separate overrides for every screen size.
Mobile-First Behaviour
Elements uses a mobile-first cascade:
Design the Mobile appearance first.
Move to the next enabled screen.
Add an override only where the layout needs to change.
That override continues to larger screens until another breakpoint changes it.
See Breakpoints for an explanation of the responsive override indicators used in the component Inspector.
Container Widths
Container widths control components that use the project’s shared container sizing. They do not force every component to that width; a component must be configured to use the container value.
