#btn_promotion_prev {
    background: #e51920;
    background: -webkit-gradient(left top, right top, color-stop(0%, #e51920), color-stop(100%, #c60d13));
    background: linear-gradient(to right, #e51920 0%, #c60d13 100%);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#e51920',endColorstr='#c60d13',GradientType=1);
    display: block;
    padding: 0 3.125vw;
    z-index: 10;
    position: absolute;
    bottom: 0;
    border-radius: 3.33333vw;
    /*transform: translateX(-50%);*/
}

@media (max-width: 960px) {
    #btn_promotion_prev {
        display: flex;
        justify-content: center;
        /*margin: -3.094vw auto 3.906vw auto;*/
        padding: 0;
        text-align: center;
        width: 41.66667vw;
        position: relative;
        bottom: auto;
        left: 0;
        border-radius: 10.41667vw;
        transform: translate(0);
    }
}

#btn_promotion_prev span {
    background: url(/assets/img/icon/arrow__white-2.png) no-repeat 0 center;
        background-size: 1.04167vw auto;
        color: #fff;
        display: block;
        font-size: 1.66667vw;
        font-style: italic;
        line-height: 3.4375vw;
        padding: 0 0 0 1.5625vw;
        height: 3.33333vw;
}

@media (max-width: 960px) {
    #btn_promotion_prev span {
        background: url(/assets/img/icon/arrow__white-2.png) no-repeat 0 center;
        background-size: 3.25521vw auto;
        display: block;
        font-size: 6.64063vw;
        line-height: 10.41667vw;
        padding: 0 0 0 5.20833vw;
        height: 10.41667vw;
    }
}

#btn_promotion_next {
    background: #e51920;
    background: -webkit-gradient(left top, right top, color-stop(0%, #e51920), color-stop(100%, #c60d13));
    background: linear-gradient(to right, #e51920 0%, #c60d13 100%);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#e51920',endColorstr='#c60d13',GradientType=1);
    display: block;
    padding: 0 3.125vw;
    z-index: 10;
    position: absolute;
    bottom: 0;
    border-radius: 3.33333vw;
    /*transform: translateX(-50%);*/
}

@media (max-width: 960px) {
    #btn_promotion_next {
        display: flex;
        justify-content: center;
        /*margin: 3.90625vw auto;*/
        padding: 0;
        text-align: center;
        width: 41.66667vw;
        position: relative;
        bottom: auto;
        right: 0;
        border-radius: 10.41667vw;
        transform: translate(0);
    }
}

#btn_promotion_next span {
background: url(/assets/img/icon/arrow__white-1.png) no-repeat right center;
    background-size: 1.04167vw auto;
    color: #fff;
    display: block;
    font-size: 1.66667vw;
    font-style: italic;
    line-height: 3.4375vw;
    padding: 0 1.5625vw 0 0;
    height: 3.33333vw;
}

@media (max-width: 960px) {
    #btn_promotion_next span {
        background: url(/assets/img/icon/arrow__white-1.png) no-repeat right center;
        background-size: 3.25521vw auto;
        display: block;
        font-size: 6.64063vw;
        line-height: 10.41667vw;
        padding: 0 5.20833vw 0 0 ;
        height: 10.41667vw;
    }
}