body{
/*background: url(https://unsplash.it/1600/900?random) center center no-repeat #fff;*/
background: url(https://images.cnblogs.com/cnblogs_com/6min/1450364/o_1912241049043eda28662.jpg) top center no-repeat  #fff;
background-size: cover;
background-attachment: fixed;
}
#blogTitle h1{
margin-left:0;
}
#blogTitle h1 a, #blogTitle h2 {
color: #333; font-size: 32px;
font-family: "微软雅黑";
text-shadow: 3px 3px 3px #aaa;
}
.postTitle{
border-bottom:none;
border-left: 3px solid #9bbcce;
}

#home{width: 1200px;}
#mainContent{width:870px;}
#footer{height:70px;}