/*ÍøÃËÍƹã*/
.sin_intr_right{
    /*position: relative;*/
    width: 316px;
}
.sin_intr_right li{
    float: left;
    width: 144px;
    margin:0 28px 15px 0;

}
.sin_intr_right li.last_li{
    margin-right: 0;
}