/***日间主题模式***/body {background-image: url("https://blog.zmkj.cn/api/suijibeijingtu");background-position-x: center;background-position-y: center;background-repeat: no-repeat;background-attachment: fixed;background-size: cover;}/***夜间主题模式***/.dark-theme {background-position-x: center;background-position-y: center;background-repeat: no-repeat;background-attachment: fixed;background-image: url("https://blog.zmkj.cn/api/suijibeijingtu");background-size: cover;}/***日间主题模式***/ body { background-image: url("https://blog.zmkj.cn/api/suijibeijingtu"); background-position-x: center; background-position-y: center; background-repeat: no-repeat; background-attachment: fixed; background-size: cover; } /***夜间主题模式***/ .dark-theme { background-position-x: center; background-position-y: center; background-repeat: no-repeat; background-attachment: fixed; background-image: url("https://blog.zmkj.cn/api/suijibeijingtu"); background-size: cover; }/***日间主题模式***/ body { background-image: url("https://blog.zmkj.cn/api/suijibeijingtu"); background-position-x: center; background-position-y: center; background-repeat: no-repeat; background-attachment: fixed; background-size: cover; } /***夜间主题模式***/ .dark-theme { background-position-x: center; background-position-y: center; background-repeat: no-repeat; background-attachment: fixed; background-image: url("https://blog.zmkj.cn/api/suijibeijingtu"); background-size: cover; }
把代码复制粘贴到站点后台→全局功能→自定义代码里面的css里面就行啦