Custom CSS, reset and operational control
Apply area-specific CSS safely and understand exactly what Reset does and does not clear.
10 guides
CRM Theme & Brand Style Manager
Open guide →GuideAdd administrator-only custom CSS
Enter CSS in the administrator-area box and save.
Open guide →GuideAdd client-only custom CSS
Enter CSS in the client-area box and save.
Open guide →GuideAdd shared administrator and client CSS
Enter CSS in the combined box and save.
Open guide →GuideUnderstand custom CSS output
Stored CSS is inserted into a style element after line-break normalisation.
Open guide →GuideApply custom CSS security controls
Only trusted administrators should enter CSS because it is injected into application pages.
Open guide →GuideReset generated theme values
Use Reset to set theme_style to an empty JSON array.
Open guide →GuideUnderstand what Reset does not clear
Reset does not clear the three separately stored custom-CSS options.
Open guide →GuideClear custom CSS explicitly
Remove content from all relevant CSS boxes and Save.
Open guide →GuideTest a theme change safely
Use a controlled browser/session and verify admin, client, login and external-form pages.
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