- Where to find it
- Labelled Opacity in the Collection Settings drawer (gear in the collection header).
- Per device
- Yes — you can set one value for every screen, or separate values for phone, tablet, and desktop.
- Underlying CSS
opacity
In plain English
Opacity fades the whole collection, including every row and component inside it. Use a value between 0 and 1.
When you would use it
- A muted collection that should sit behind stronger neighbouring content visually.
How to change it
- Open Collection Settings, then "Opacity".
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
- Opacity on the collection affects everything inside, not only the background.
Related settings
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.