css :before选择器,title加点
参考:https://blog.csdn.net/weixin_42681295/article/details/107668844
.title:before { content: ""; display: block; margin-right: 14rpx; width: 0; height: 0; -webkit-border-radius: 50%; -moz-border-radius: 50%; border-radius: 50%; border: 6rpx solid #0187CF; }