Sizing

Set component width, height, and responsive size constraints

Sizing controls the displayed width and height of a component. Values can come from Theme Spacing or use custom CSS units and functions.

Width and Height

The general Sizing control defaults to Auto width and Auto height.

Container-style components use selection menus:

Option	Behaviour
Auto	Lets content, the parent, and the browser determine the size.
Full	Uses the full size of the parent: 100% width or height.
Screen	Uses the viewport: 100vw width or 100vh height.
Breakpoint	Uses the configured Theme Studio breakpoint width. Available for container width.
Theme Spacing	Reveals a responsive Theme Spacing or custom value.

Container-style Sizing defaults to Full width and Auto height. Theme Studio → Screens controls Breakpoint widths.

Auto is standard CSS auto sizing, not shrink-to-fit: a block-level component with Auto width fills the available width of its parent. To centre a component that is narrower than its parent, give it a fixed width and Auto left and right margins in Spacing.

Specialised defaults include:

• Image and Video — Width 100%, Height Auto.
• SVG — Width theme spacing 20, Height Auto.

Min & Max Settings

Enable is off by default. Enabling it reveals:

• Width → Min — Defaults to 0.
• Width → Max — Defaults to Auto.
• Height → Min — Defaults to 0.
• Height → Max — Defaults to Auto.

Min values prevent a component shrinking below a limit. Max values prevent it growing beyond a limit. These settings are responsive.

A maximum width improves readability for long text and prevents large screens stretching content too far. A minimum width should be used carefully because it can cause horizontal scrolling on small screens.

Aspect Ratio

Image and Video share an Aspect Ratio control:

• Auto — Uses the source media’s natural ratio. This is the default.
• Wide — Uses 16:9.
• Tall — Uses 4:5.
• Custom — Reveals a ratio field, which defaults to 7/5.

For a fixed ratio, Object Fit offers Fill, Contain, Cover, None, and Scale Down, defaulting to Cover.

Position sets the focal point inside the frame and defaults to Centre.

Using Custom CSS Values

Switch a supported size control to manual mode to enter a valid CSS value. Common examples:

• 250px — A fixed pixel size.
• 20rem — A size relative to the root text size.
• 75% — A percentage of the containing block.
• 100vw — The full viewport width.
• 80vh — 80% of the viewport height.
• calc(100vw - 20px) — The viewport width minus 20 pixels.
• clamp(18rem, 50vw, 48rem) — A responsive size with minimum and maximum limits.

See CSS math functions for calc(), min(), max(), and clamp().

Sizing UI in Elements

Sizing values can use Theme Spacing or custom CSS values.