#main {
    width: 100%;
    margin-top: 120px;
    height: auto;

    background: -ms-linear-gradient(top, #dddddd, #ffffff);
    background: -webkit-gradient(linear, left top, left bottom, from(#dddddd), to(#ffffff));
    background: -moz-linear-gradient(top,  #dddddd, #ffffff);
}
.maintop{
    width: 100%;
    height: 60px;
    float: left;
    font-family: Downlink;
    font-size: 30px;
    text-align: center;
    padding-top: 20px;
    
}
.maincenter{
    width: 100%;
    height: 280px;
    font-size: 20px;
    text-align: center;
    font-family: segoe UI;
    
    
}
.mainbottom{
    width: 100%;
    height: 550px;
    font-family: segoe UI;
    font-size: 30px;
    font-weight: bold;
    text-align: center;

}