Not. HTML tables show that their contents are tabular. This information extends to the Accessibility API, so accessibility tools, such as screen readers, can tell their users what to expect in the following information. Please note that cell headers can be read several times so that the AT user can navigate while executing the data.
CSS tables do not behave this way. These are just mock instructions. Information about the data that the AT user receives will display the semantics of the HTML, not the CSS layout.
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