body{
background-color:white;
}
#home {margin:200px auto;margin-top:20px;width:auto;max-width:1100px;}
.mySearch {margin-bottom: -5px;}
.mySearch h3 {display: none;}
#mainContent {float: right;}

/* 手机 */
@media all and (max-width: 768px) {
    #home {margin:0px; width:auto;}
    .postDesc{width:auto;}
    #sideBar{display:none;}
}