HTML Checking for Large Sites
Rocket Validator automatically checks your pages on the W3C Validator.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
Malformed comment syntax has been found, check out the affected comment.
HTML comments are helpful to leave notes about the code right next to it. To create a comment, it must start with <!-- and end with -->, as in this example:
<!-- Good comment -->
<!--
Comments can
be multi-line
-->
A common cause for a malformed comment is using too many hyphens (-) as in this example:
<!-- Wrong comment --->When was the last time you validated your whole site?
Keep your sites healthy checking for A11Y/HTML issues on an automated schedule.