#home {
    margin: 0 auto;
    width: 85%;
    min-width: 950px;
    background-color: #fff;
    padding: 30px;
    margin-top: 50px;
    margin-bottom: 50px;
    box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
}
#blogTitle h1 {
    font-size: 35px;
    font-weight: bolder;
    line-height: 1.5em;
    margin-top: 20px;
}
#navigator {
    font-size: 18px;
    border-bottom: 1px solid #ededed;
    border-top: 1px solid #ededed;
    height: 50px;
    clear: both;
    margin-top: 22px;
}
#navList a:hover{
    color:#4C9ED9;
}
#sideBar {
    float:left;
}

#mainContent{
    float:right;
}
body{
  background:url(https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505055298668&di=08e3e346091ba1972374b2d0f480c516&imgtype=0&src=http%3A%2F%2Fimg5.pcpop.com%2FArticleImages%2F0X0%2F3%2F3790%2F003790399.jpg)fixed;
background-size:cover;
background-repeat:no-repeat;
opacity:0.8;
}
.c_b_p_desc {
    font-size: 17px;
    line-height: 1.7;
}
.postTitle {
    border-left: 3px solid #21759b;
    margin-bottom: 10px;
    font-size: 23px;
    float: right;
    width: 100%;
    clear: both;
}
.catListTitle {
    font-size: 2.35em;
    margin-top: 21px;
    margin-bottom: 10.5px;
    border-left: 10px solid #30A3CC;
    padding: 10px 0 10px 14px;
    background-color: #ffffff;
}
#sideBar h3 {
    font-size: 18px;
}