1. Delete the prompt page that "文档中心正在构建中" 2. Add four document links:“安装指南”、“管理员指南”,"容器用户指南","虚拟化用户指南" to Docs module.3. Change the height of the gitee icon on the large screen to 18px 4.Change the button "下载ISO" to  "下载openEuler-1.0-aarch64-dvd.iso".