.down_yl1{
    text-align:center;}
.down_yl1 .down_li{
    display:inline-block;
    width: 17.5%;
    margin-right:2%;
   margin-bottom: 18px;}
.down_yl1 .last{
    margin-right:0%;}
.down_yl1 .last_li{
    margin-right:0%;}


@media only screen and (max-width: 550px){
    .down_yl1 .down_li{
       width: 47%;}
    .down_yl1 .last_li{
        margin-right:2%;}
    .down_yl1 .e_li{
        margin-right:0%;}
}
.down_yl{
    text-align:center;}
.down_yl .down_li{
    display:inline-block;
    width: 31%;
    margin-right:2%;
   margin-bottom: 18px;}

.down_yl .last_li{
    margin-right:0%;}

@media only screen and (max-width: 480px){
    .down_yl .down_li{
       width: 47%;}
    .down_yl .last_li{
        margin-right:2%;}
    .down_yl .e_li{
        margin-right:0%;}
}