From css to saas is a manual work. A developer will have to do it manually. so it depends how long your styling sheet is. from saas to css we have a systematic solution.
Hello,
I have 6+ years experience on html(5), css(3), bootstrap, less, php, javascript, jquary, WordPress and graphic design.
I have 6000+hrs work experience on other freelancing site.
ping me for more details.
Thanks