header {
    background-image: url(/images/product/main.png);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
    height: 80vh;
}

.product-block {
    background-color: var(--i-light-blue);
}

.product-img {
    background-repeat: no-repeat;
    background-size: auto 100%;
    background-position: center center;
    min-height: 500px;
}

    .product-img.front {
        display: none;
    }

    .product-img.back {
        display: block;
    }

@media(max-width:767px) {
    .product-img.front {
        display: block;
    }

    .product-img.back {
        display: none;
    }
}

.p_title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--i-dark-blue);
    text-align: center;
}

.p_small_title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--i-tech-blue);
    text-align: center;
}

.p_content {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--i-steel-blue);
    padding-bottom: 0;
    margin-bottom: 0;
}

.p_small_content {
    font-size: 1.2rem;
    text-align: justify-all;
    color: var(--i-gray-blue);
}