custom styles and page style does not work

hi
i need to make it so the style drop down will display custom styles and in addition i need to make it so when a user write it will look like it would look on the web page .

the version i have is 3.6.1 and i have this in my config file:
config.extraPlugins = 'stylesheetparser';
config.contentsCss = '/assets/css/editor.css';
config.stylesSet = [];

it works on one project but not in the current project.


any idea what is wrong?