前端~一切开始的地方

<iframe frameborder= "no" border= "0" marginwidth= "0" marginheight= "0" width=800 height=800 src= "https://edrawcloudpubliccn.oss-cn-shenzhen.aliyuncs.com/viewer/self/27857970/share/2022-8-22/1661164130/main.svg"></iframe>