制作右侧小箭头

制作右侧小箭头

<div class="firm col-md-12">
   <h3>厂商参与流程</h3>
   <ul class="firm_con list-unstyled">
       <li>注册</li>
       <li>实名认证</li>
       <li>创建项目</li>
       <li>冻结资金</li>
       <li>发布完成</li>
   </ul>
   
</div>

.firm_con li:after {
    position: absolute;
    top: 35px;
    left: 180px;
    content: "";
    width: 0;
    height: 0;
    vertical-align: middle;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    border-left: 4px solid;
}