@media screen and (max-width: 599px) { 
    .size1of5{
        margin: 0 auto !important;
        width: 100%;
    }
    .size1of5 p{
        text-align: center;
    }
    .sp_center{
        text-align: center;
        margin-left: 0px !important;
    }

}
@media screen and (min-width: 600px) { 
    .item{
        width: 138px;
    }
}