#box_top
{
    width :100%;
    height :100px;
    padding :10px 10px 10px 10px;
    float:none ;
}

.box
{
    width:20%;
    float:left ;
    border-style :solid ;
    border-width :2px;
    border-color : #ccffff;
    margin: 10px 0px 10px 18px;
    cursor:pointer ;
}
.box_down
{
    width:20%;
    border-style :solid ;
    border-width :2px;
    border-color : #0099CC;
    margin: 10px 0px 10px 18px;
    cursor:pointer ;
}

.boxCenter
{
    border-style :solid ;
    border-width :2px;
    border-color : #99ccff;
    margin: 10px 0px 10px 18px;
    cursor:pointer ;
}

.box_img
{
    height: 100px; 
    width:100%;
}

#center
{
    width:100%;
}

.mainContent
{
    width :450px;
    float:none ;
}

.leftContent
{
    width:200px;
    float :right ;
}