Rocket Validator integrates the W3C Validator HTML checker into an automated web crawler.
HTML issues tagged as strong.
An end tag </strong> has been found in an incorrect place within the document, violating nesting rules. A common case is closing it before closing other nested tags, for example:
<!-- This line is incorrect as the <strong> tag was closed before the nested <a> tag --> <strong><a href="#">link</strong></a> <!--- This line is OK as every end tag respects the nesting rules --> <strong><a href="#">link</a></strong>
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