collection.css

.product-details{
    width: 100%;
    padding: 60px 10vw;
    display: flex;
    justify-content: space-between;
}

.image-slider{
    width: 500px;
    height: 500px;
    position: relative;
    background-image: url('img/img-1.jpg');
    background-repeat: no-repeat;
    background-size: cover;
}

.product-images{
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    background: #fff;
    border-radius: 5px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    height: 100px;
    grid-gap: 10px;
    padding: 10px;
}

.product-images img{
    width: 100%;
    height: 80px;
    object-fit: cover;
    cursor: pointer;
}

.product-images img.active{
    opacity: 0.5;
}

.details{
    width: 70%;
}

.details .product-brand{
    text-transform: capitalize;
    font-size: 25px;
}

.details .product-short-des{
    font-size: 20px;
    line-height: 30px;
    height: auto;
    margin: 15px 10px 30px;
}

.product-price{
    font-weight: 600;
    font-size: 25px;
    margin-right:10px;
}

.product-actual-price{
    font-size: 25px;
    opacity: 0.5;
    text-decoration: line-through;
    margin: 10px 20px;
    font-weight: 250;
}

.product-discount{
    color: #ff7d7d;
    font-size: 20px;
}

.product-sub-heading{
    font-size: 30px;
    text-transform: uppercase;
    margin: 60px 0 10px;
    font-weight: 300;
}

.size-radio-btn{
    display: inline-block;
    width: 80px;
    height: 80px;
    text-align: center;
    font-size: 17px;
    border: 1px solid #383838;
    border-radius: 50%;
    margin: 10px;
    margin-left: 0;
    line-height: 80px;
    text-transform: uppercase;
    color: #383838;
    cursor: pointer;
}

.size-radio-btn.check{
    background: #383838;
    color: #fff;
}

.btn{
    width: 50%;
    padding: 20px;
    border-radius: 5px;
    background: none;
    border: 1px solid #383838;
    color: #383838;
    font-size: 20px;
    cursor: pointer;
    margin: 20px 0;
    text-transform: capitalize;
}

.cart-btn{
    margin-right: 2%;
    background: #383838;
    color: #fff;
}