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> <span class="fa-stack fa-lg"> <i class="fa fa-circle-thin fa-stack-2x"></i> <i class="fa fa-twitter fa-stack-1x"></i> </span> fa-twitter on fa-circle-thin<br> <span class="fa-stack fa-lg"> <i class="fa fa-circle fa-stack-2x"></i> <i class="fa fa-twitter fa-stack-1x fa-inverse"></i> </span> fa-twitter (inverse) on fa-circle<br> <span class="fa-stack fa-lg"> <i class="fa fa-camera fa-stack-1x"></i> <i class="fa fa-ban fa-stack-2x text-danger" style="color:red;"></i> </span> fa-ban on fa-camera </body> </html>
运行结果