The issue is that you have disabled the CSS package, per the instructions of the CSS3 author. Unfortunately, disabling the CSS package breaks the HTML syntax. The
Honestly, if the CSS3 package is going to tells users to disable the CSS syntax, it will likely need to include it's own HTML syntax that embeds CSS3 instead of CSS. Alternatively, if the CSS3 syntax can create a context named
rule-list-body and I will make sure that the HTML syntax references
scope:source.css#rule-list-body for the next build.
Edit: the HTML syntax now references CSS via scope name, so all the CSS3 author needs to do is create a context named
rule-list-body that will properly highlight the contexts of a