Walk CLS Launch Hardening
Apply a CLS prevention path to dynamic launch content.
Paid traffic launch A cookie banner, localized headline, and ad slot appear after first paint and push the CTA down. Unexpected movement turns a polished page into a trust problem. CLS prevention Reserve -> isolate -> test states Visual stability is designed before content arrives late. Polish default Test the happy path with a fast network and no dynamic modules. The CTA stays where the user expects it. CLS is prevented by layout contracts, not by hoping late content loads quickly. Reserve space Boxes before bytes The hero image and ad slot have no stable dimensions in the initial HTML.…
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