/*========= ▼新box用CSS ===============*/

*, *:before, *:after {
    box-sizing: border-box;
}
.col_5{
    width: 100%;
    display: flex;
    flex-wrap: wrap;
}
.col_5 > *{
    width: calc( 20% - 20px );
    margin-right: 25px;
    margin-bottom: 25px;
}
.col_5 > *:nth-child(5n){
    margin-right: auto;
}
@media screen and (max-width: 960px) {
    .col_5 > *{
        width: calc( 25% - 9px );
        margin-right: 12px;
        margin-bottom: 12px;
    }
    .col_5 > *:nth-child(5n){
        margin-right: 12px;
    }
    .col_5 > *:nth-child(4n){
        margin-right: auto;
    }
}
@media screen and (max-width: 580px) {
    .col_5 > *{
        width: calc( 33.33333% - 8px ) ;
    }
    .col_5 > *:nth-child(5n){
        margin-right: 12px;
    }
    .col_5 > *:nth-child(4n){
        margin-right: 12px;
    }
    .col_5 > *:nth-child(3n){
        margin-right: auto;
    }
}

/*========= ▲新box用CSS ===============*/