The symptom is specific: headings are chosen for appearance rather than structure. Start with the affected item and identify the decision or input that could produce this behavior.
Find the likely cause
Visual styling and document hierarchy are conflated.
Treat this as an explanation to verify against the actual work. Look at the input, the relevant decision, and the final result together. If the evidence does not support this diagnosis, investigate the mismatch before applying a convenient but unrelated fix.
Make the targeted correction
Use a logical heading order and style it separately.
Accessible content communicates its structure and meaning in ways that work across different reading and interaction needs.
Check that the repair worked
Inspect the heading outline without relying on visual size.
Repeat the check on the final version that the reader or customer will encounter. An approved draft, a preview, and a published result can differ; the acceptance decision should concern the version people actually use.
Prevent the next related failure
A separate issue to watch for is this: links say only click here or read more. Describe the resource or action in the link text.
Monitor the useful outcome
Track unresolved accessibility defects and successful completion of representative reading tasks.
Keep a short record of the original symptom, the evidence behind the diagnosis, and the result of the acceptance check. That record makes the solution reusable when the same condition appears again, without assuming that every superficially similar problem has the same cause.
Official reference for the platform or standard discussed: W3C WAI: image alternatives.