.product-header {
    position: relative;
}

    .product-header .image-cover {
        opacity: .7;
    }

.image-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.position-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 100%;
}

.headersubtitle {
    font-size: 50px;
    font-weight: 500;
    line-height: 1em;
      margin: 15px 0 15px 0px;
    background-color: rgba(0, 0, 0, 0.4);
    padding: 15px;
    color:#ffffff;
}

.sectiontitle {
    font-size: 50px;
    font-weight: 300;
    line-height: 1em;
    color: #ffffff;
    margin: 0;
 
}
.sectiontitle h2 {
    background-color: rgba(0, 0, 0, 0.4);
    padding: 15px;
    color:#ffffff;
}


#product_detail p {
    font-size:18px; line-height:24px;
}
@media ( max-width: 600px ) {
    .headersubtitle {
        font-size: 30px;
      
    }

    .sectiontitle {
        font-size: 25px;
    }
     .sectiontitle h1 {
        font-size: 25px !important;
    }

    .position-center {
        position: absolute;
        top: 50%;
        left: 0px;
        text-align: center;
        width: 100%;
        transform:none;
    }

     .product-header img {
    max-height:400px;
    width:auto !important;
    }

}


@media ( max-width: 768px ) {
    #header_product_det {
       display:none;      
    }  
    
     .headersubtitle {
        font-size: 20px;
    }
     /*.sectiontitle h1 {
        font-size: 20px !important;
    }*/

    .product-header img {
    max-height:400px;
    width:auto;
    }
}




@media ( max-width: 1368px ) {
    #product_detail p {
        font-size: 16px;
        line-height: 20px;
    }
    .headersubtitle {
        font-size: 28px;
      
    }

    .sectiontitle {
        font-size: 35px;
    }
     .sectiontitle h1 {
        font-size: 35px !important;
    }

    .position-center {
        position: absolute;
        top: 50%;
        left: 50%;
        text-align: center;
        max-width: 100%;
        /*transform:none;*/
        transform: translate(-50%, -50%) !important;
    }

    .main-menu .navigation > li > a{
            font-size: 16px;
    }
}