Use python web of small icons

Large amount of icons website: font- Awesome (download import the same way as Bootstrap) 
    font - Awesome using i label 
using the icon method: 
    # find icons corresponding class name to the class can span tag! 
    # (Font color attribute icon can change color) 
    <span class = "" > </ span> 
    
Summary: 
     icon
             1. Bootstrap built: https://v3.bootcss.com/components/ 
            2. font-Awesome icon: HTTP: //www.fontawesome.com.cn/ 
            3. Ali icons: http://iconfont.cn/