.main_info {
    display: flex;
    justify-content: space-between;
}
.main_info .img {
    width: 37%;
    margin-right: 10px;
    box-shadow: 1px 1px 5px #ddd;
}
.main_info .info {
    width: 58%;
}
.main_info .item_name {
    font-size: 22px;
    font-weight: bold;
}
.main_info .item_cate {
    margin: 5px 0;
    color: #00a550;
}
.main_info .sold_out {
    background-color: #00a550;
    color: #fff;
    font-size: 16px;
    margin: 10px 0;
    padding: 15px;
    font-weight: bold;
    text-align: center;
}
.main_info .info .log_import {
    display: flex;
    margin: 10px 0;
}
.main_info .info .price {
    font-size: 15px;
    font-weight: bold;
    color: #f49739;
    margin: 0 5px;
}
.main_info .info p.price {
    margin: 15px 0;
    font-size: 18px;
}
.main_info .info .price span.old_price {
    text-decoration: line-through;
    color: #888;
    font-size: 14px;
    margin-right: 20px;
}
.main_info .info .price span.spec {
    color: #555;
    font-size: 14px;
}
.main_info .info .flx_box {
    display: flex;
    margin-bottom: 20px;
}
.main_info .info .set_num {
    border: 1px solid #333;
    border-radius: 10px;
    display: flex;
    justify-content: space-between;
    width: 100px;
    margin-right: 15px;
    overflow: hidden;
}
.main_info .info .set_num span {
    padding: 5px 10px;
    font-size: 14px;
    text-align: center;
    cursor: pointer;
    transition: 0.2s;
}
.main_info .info .set_num span:hover {
    background-color: #ccc;
    color: #fff;
}
.main_info .info .set_num input[type=number] {
    text-align: center;
    width: 45px;
}
input[type=number]::-webkit-inner-spin-button, 
input[type=number]::-webkit-outer-spin-button { 
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    margin: 0; 
}
.main_info .info .add_cart {
    border-radius: 7px;
    padding: 0 10px;
    background-color: #f49739;
    color: #fff;
}
.main_info .info .add_cart:disabled {
    background: #ddd;
}

.sub_info {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
.sub_info .sub_title {
    font-size: 18px;
    font-weight: bold;
    color: #000;
    width: 100%;
}
.sub_info dl {
    width: 49%;
    display: flex;
    padding: 10px 0;
    border-bottom: 1px solid #ddd;
}
.sub_info dl dt {
    font-size: 14px;
    width: 150px;
    color: #333;
    margin-right: 10px;
}
.sub_info dl dd {
    font-size: 14px;
    width: calc(100% - 160px);
    color: #555;
}


@media screen and (max-width: 640px) {
    .sub_info dl {
        width: 100%;
    }
}

@media screen and (max-width: 500px) {
    .main_info {
        flex-wrap: wrap;
    }
    .main_info .img {
        width: 100%;
        max-width: 320px;
        margin: 0 auto 20px;
    }
    .main_info .info {
        width: 100%;
    }

}