best way to include custom css

The best way is: - Create a new custom less file (ex: custom.less) - Include it into evolve.info to end of file by using this line: lessc[] = lessc/custom.less - Clear cache, custom and test.

Just a thought...we use the Drupal CSS Injector module to override any CSS in a theme. It works quite nicely. You can use it for specific pages, browsers, or media.