Important Update Salesforce Lightning Design System (SLDS) Architecture Enhancements! Full details here >> https://sforce.co/3wpP3kt

What's happening?

We’re modifying the design system architecture to support future product innovations. The changes we’re making in the Summer ’24 release won’t be visible to most customers. If you’ve customized the visual design of your pages or sites by using supported techniques, our changes should have little to no impact on your customizations.

If you have used unsupported CSS overrides to customize an Experience Cloud site or other Lightning pages, those customizations can lead to undesirable visual changes as we update our architecture. Developers or admins who are responsible for the customizations must take action before or during the Summer ’24 release to change overrides and use supported customization techniques.