body {background: url(https://www.cnblogs.com/images/cnblogs_com/janty/950917/o_dark-1.jpg) top center no-repeat #000;background-size: cover;background-attachment: fixed;}
			.gallery img {max-width: 100%;}
			/*主体容器*/
			#home {width: 90%;}
			/*主体内容*/
			#mainContent {width: calc(100% - 340px);float: right;}
			/*侧边栏*/
			#sideBar{width: 300px;margin: 0;float: left;}
			.newsItem {background: #f8f8f8;border-radius: 8px;}
			.Cal{padding: 5px;box-sizing: border-box;background: #f8f8f8;}
			.sidebar-block{background: #f8f8f8;}
			#topics {}