30 从CodePen开源HTML / CSS项目

I have always been a supporter of CodePen ever since I found the website. 这是一个在线的HTML / CSS / JS代码编辑器,你可以建立思想和实时测试它们. 开发人员还可以与他人分享自己手中的笔在世界各地! It is a great web application which allows frontend developers to practice their skills