RUNOOB.COM
源代码：
点击运行
<!DOCTYPE html> <html> <head> <link rel="stylesheet" href="https://cdn.staticfile.org/font-awesome/4.7.0/css/font-awesome.css"> </head> <body> <i class="fa fa-shield"></i> <i class="fa fa-shield fa-rotate-90"></i> <i class="fa fa-shield fa-rotate-180"></i> <i class="fa fa-shield fa-rotate-270"></i> <i class="fa fa-shield fa-flip-horizontal"></i> <i class="fa fa-shield fa-flip-vertical"></i> </body> </html>
运行结果