body {
    background-image: url(https://www.cnblogs.com/images/cnblogs_com/vilva/1231220/o_psb.jpg);
    background-size: auto 100%;
    background-size: cover;

}

#main {
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
    background: rgba(255,255,255,0);
}
#mainContent {
    background-color: white;
    color: black;
}
#navigator {
    background-color: rgba(255,255,255,0);
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
    margin-bottom: 10px;
}
.postDesc, .postBody, #comment_nav, .c_ad_block a, #author_profile_detail a, #comment_nav a {
    color: black!important;
}
#navList a:link, #navList a:visited, #navList a:active {
    color: black;
    font-family: serif;
}