.qty-wrapper .dn { background-color: red;
    color: white;
    font-family: arial;
    font-size: 30px;
    line-height: 40px;
    padding: 0 15px;
    border-radius: 360px;
    margin-right: 10px;
background-image: url("../images/-.png");
}
.qty-wrapper .up {
    background-color: #39c;
    color: white;
    font-family: arial;
    font-size: 30px;
    line-height: 40px;
    padding: 0 15px;
    border-radius: 360px;
    margin-right: 10px;
    background-image: url("../images/+.png");
}