拓扑图---给浏览器加背景测试

#在线画拓扑图工具
https://www.processon.com/diagrams

body {
background-image: url(**********************.jpg);
background-attachment: fixed;
background-size: cover;
}

这俩图片地址不好使呀！！！简书不能用么这是

---

给浏览器加背景

https://blog.csdn.net/qq_39030646/article/details/84982371

图片处理

https://blog.csdn.net/qq_39030646/article/details/93984486