简单教程
提交运行
代码编辑器：
<!DOCTYPE html> <meta charset="utf-8" /> <link rel="stylesheet" href="https://cdn.bootcss.com/font-awesome/4.7.0/css/font-awesome.css"> <div> <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 </div>
运行结果：