蓝色干净简洁的后台模板，蓝色风格，看上去很正规、干净、简单，功能页面以选项卡形式打开，只是没提供功能页面的模板，需要自己手动打造一个，web网页制作参考资料。-Blue clean background templates, blue style, looks very formal, clean, simple, function page open in tabs, but did not provide the function of page template, need to manu