#home {
    width: 1100px;
}
#mainContent {
    width:800px;
}
.c_ad_block {
  display:none;
}
#ad_t2 {
  display:none;
}
.ad_text_commentbox {
    margin-bottom: 40px;
}
body {
    background: url(https://images2018.cnblogs.com/blog/35033/201808/35033-20180814123709299-611971533.jpg) fixed;
    background-size:100% 100%;
}
#blogTitle h2 {
    margin-left: 2.1em;
    margin-top: 12px;
}
#blogTitle h1 {
    font-size: 250%;
}