can I use... Support tables for HTML5, CSS3, etcTest a feature Our partnership with BrowserStack now lets you test your website for compatibility across 2,000+ real browsers and devices. Test on: Did you know? Next If a feature you're looking for is not available on the site, you can vote to have it included. Better yet, if you've done the research you can even submit it yourself! You can import usage data from your Google Analytics account and
http://msugai.fc2web.com/web/CSS/selector.html
これ知らないプログラマって損してんなって思う汎用的なツール
