Check your CSS code without leaving the IDE by using CssCop, which brings the CSS Lint functionality to the Visual Studio environment.

The new release brings improvements to JavaScript heap profiles, CSS code formatting, and local history. Visual Studio Code 1.66 became available on March 30.

I hope some one has seen this behavior before, because I am stumped.Whenever I try to open any CSS file all I get is: This operation could not be completed ...