- Where to find it
- Labelled Width in the "Entire Row" section of the Modify drawer.
- Per device
- Yes — you can set one value for every screen, or separate values for phone, tablet, and desktop.
- Underlying CSS
width
In plain English
By default a row stretches with its container. Width lets you constrain that band — useful with Horizontal Alignment when the row should be narrower than the page.
When you would use it
- A content band should be a fixed or percentage width rather than full bleed.
How to change it
- Open "Entire Row", then "Width", and pick a unit or auto.
One value, or one per device? Every input in this setting sits under a “Same value for all resolutions” checkbox. Leave it checked for a single value everywhere, or uncheck it to give phones, tablets, and desktops their own. How per-device values work.
Watch out for
- A narrow row with wrap can still stack columns; check preview on phones.
Related settings
For developers
The technical reference for what this setting produces: MDN: width. You do not need any of it to use the setting — it is there for whoever is building the components or debugging the published page.
Where to go next
- Back to the full attribute reference
- The Composer — the editing surface these settings live in.
- Publishing — how a change like this reaches your live site.