问题
It's a bug of google chrome or there are some guidelines which i should stick to, to return that feature?
Thank you.
UPDATED Issue was caused by prefixfree.
回答1:
There are multiple cases, 1. You are using less CSS files. 2. The CSS class is on same page. 3. Class is generated by a plugin
回答2:
I was facing the save problem, but my case it happened because of a old local folder map in the Sources tab.
来源：https://stackoverflow.com/questions/27150499/google-chrome-developer-tools-not-showing-css-filename-next-to-css