.hidder{
    margin-top: 5%;
    text-align: center;
    margin-bottom: 4%;
}
.hidder h3{
    font-size: 40px;
    margin-bottom: 0;
}
.under-line{
    border-bottom: 2px solid rgb(128, 72, 72);
    padding: 0 40px;
    transition: padding 0.3s ease, border-bottom 0.3s ease;
}
.hidder:hover .under-line{
    padding: 0 60px;
    border-bottom: 3px solid rgb(128, 72, 72);
}
.chairs{
    display: flex;
    gap: 2%;
}.ch{
    width: 24%;
    position: relative;
}
.img-1{
    width: 100%;
    visibility: visible;
    z-index: 2;
}
.img-2{
    width: 100%;
    
    transform: translate(-100%);
    z-index: 1;
}
.img-cover{
    background-image: url(../img/10-378x450.jpg);
    display: flex;
    align-items: stretch;
}
.ch h3{
    color: gray;
    margin-bottom: 3%;
}
.ch span{
    font-size: 20px;
}
.icon-dou{
    background-color: rgb(128, 72, 72);
    width: 10%;
    height: 7%;
    text-align: center;
    transform: translate(900%, -150%);
    position: absolute;
    visibility: hidden;
}
.icon-dou i{
    color: #fff;
    margin-top: 25%;
}
.ch:hover .icon-dou{
    visibility: visible;
}
.ch:hover .img-1{
    visibility: hidden;
}