Where your CSS applies
Add CSS in the CSS editor of your site/form.
If Sync website & form theme is enabled, your CSS applies to both (where relevant).
Targeting with Autocomplete (how it works)
Click into the CSS editor.
Type
[and begin typingdata….Use the dropdown to select a target:
Block IDs — e.g.,
[data-block-id="0196a250-9d65-714b-b7a7-52f57501c430"]Block types — e.g.,
Hero,Image(applies to all blocks of that type)Data fields — e.g.,
title,description(targets content areas inside blocks)
Best Practices
Prefer specific targets. Use Block ID when you only mean to affect a single spot.
Avoid overly broad selectors. Targeting a whole block type (e.g., every
Hero) can have wide-ranging effects.Mobile & accessibility. Large font/spacing changes, low color contrast, or hiding elements can impact readability and responsiveness—validate on multiple screen sizes.