body{
    background-color:#efefef;
    background-image: 
    url('https://files.cnblogs.com/files/InXX/SC01C13.bmp');
    background-repeat: no-repeat;
    background-attachment:fixed;
    background-position:center 0;
    background-size:cover;
    padding-top:0px;
}


#home{
position:relative;
z-index:9; 
background:rgba(255, 255, 255, 0.85);
border-radius:10px;
pointer-events:none;
}
#home,#header div{
pointer-events:auto;
}
#mainContent{
margin-left:0px;
width:70%;
}
#mainContent .forFlow{
margin-left:2em;
}
#sideToolbar{
pointer-events:none;
}
#sideToolbar div{
pointer-events:auto;
}
#sideCatalogBtn{
position:absolute;
bottom:10px;
z-index:10;
pointer-events:auto;
}
#home #sidebar_postarchive,#sidebar_news,#sidebar_search,#sidebar_shortcut,.catListView,.catListLink{
background:rgba(255, 255, 255, 0);
}
#dd{
position: fixed; 
top:0; 
left: 0; 
opacity:0.8;
}
#blog-calendar{

}
#clockdiv {
  text-align: center;
}
<!--目录样式-->
#sideCatalog a{
  font-size:12px;
  font-weight:normal !important;
}

#player{
margin:0;
}