.list{
    margin-top:  3rem;
  
}

.list .img{
    margin: 2rem 0;
    position: relative;
}
.list .introduction {
    position: absolute;
    top: 0;
    width: 100%;
    background-color: rgba(36, 104, 131, 0.9);
    height: 100%;
    cursor: pointer;
    opacity:0 ;
    transition: opacity 500ms;
}
.list .img:hover .introduction{
    opacity: 1;
}

.list .img h3{
    margin-top: 12rem;
}

.list .img p{
    padding: 0 30px;
}


.content .content_title{
    background-image: url('../img/product/item_title.png');
    background-size: auto;
    font-weight: bold;
}

.text {
    margin-top: 6rem;
}

.foot-bottom .bottom{
    background-color: #145267;
    color: #fff;
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 8px;
}



@media (max-width: 1200px) {
    .list .img h3{
        margin-top: 10rem;
    }

}

@media (max-width: 992px) {
    
    .list .img h3{
        margin-top: 4rem;
    }
}


@media (max-width: 768px) {
    .list .img h3{
        margin-top: 2rem;
      
    }
    .list .img p{
        display: -webkit-box;
        -webkit-line-clamp: 5;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
}