body{
    background-image: url("https://images.cnblogs.com/cnblogs_com/BigGame/1805324/o_200713081034p2536597232.jpg");
    background-position: initial;
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-origin: initial;
    background-clip: initial;
    height:100%;
    width:100%;
    opacity: 0.75
    }
#home {
    margin: 0 auto;
    width: 85%;
    min-width: 950px;
    background-color: #fff;
    padding: 30px;
    margin-top: 20px;
    margin-bottom: 50px;
    box-shadow: 0 2px 6px rgba(100,100,100,.3);
}
#blogTitle h1 a {
    color: #515151;
    font-size: 50px;
}
#navList {
    min-height: 30px;
    float: left;
    font-size: 18px;
}
#navList a {
    padding-top: 15%;
}
#navList a:hover {
    color: #4C9ED9;
}
.catListTitle {
    font-size: 20px;
    margin-top: 21px;
    margin-bottom: 10.5px;
    border-left: 10px solid #339bcc;
    padding: 10px 0 10px 14px;
    background-color: #f7f7f7;
}
#mainContent {
    float: right;
}
#sideBar {
    float: left;
}