Rocket Validator automatically scans your sites for accessibility issues using the W3C Validator,
hosted on our own servers and integrated into our web crawler.
HTML issues tagged as missing value.
An attribute has been found in an element, where the intended value is missing. A common cause is including the equal sign, but not passing anything after it.
<!-- This is missing the value for the style attribute, so it's invalid -->
<!-- This is explicitly passing a blank string as the value, so it's valid -->