1.下载合适的svg图标

svg图标可以无失真缩放
https://www.iconfont.cn

2.在线生成字体图标

https://icomoon.io/app/#/select

New Empty Set  => import to set => Generate Font => Download font => Copy *.css and font to project

3.使用

格式: icon-${icon-name}

<span class='icon-right'></span>

.icon-right {
  font-size: 50px;
  color: red;
}