Product Page.

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Product Page</title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
    <link rel="stylesheet" href="styles.css">
</head>
<body>
    <div class="container">
        <div class="col search">
            <section class="panel">
                <div class="panel-body">
                    <div class="pull-right">
                        <ul class="pagination pagination-sm pro-page-list">
                            <li><a href="#">1</a></li>
                            <li><a href="#">2</a></li>
                            <li><a href="#">3</a></li>
                            <li><a href="#">ยป</a></li>
                        </ul>
                    </div>
                </div>
            </section>
            <section class="panel">
                <div class="panel-body">
                    <input type="text" placeholder="Keyword Search" class="form-control" />
                </div>
            </section>
            <section class="panel">
                <header class="panel-heading">Category</header>
                <div class="panel-body">
                    <ul class="nav prod-cat">
                        <li>
                            <a href="#" class="active"><i class="fa fa-angle-right"></i> Dress</a>
                            <ul class="nav">
                                <li class="active"><a href="#">- Shirt</a></li>
                                <li><a href="#">- Pant</a></li>
                                <li><a href="#">- Shoes</a></li>
                            </ul>
                        </li>
                        <li><a href="#"><i class="fa fa-angle-right"></i> Bags &amp; Purses</a></li>
                        <li><a href="#"><i class="fa fa-angle-right"></i> Beauty</a></li>
                        <li><a href="#"><i class="fa fa-angle-right"></i> Coat &amp; Jacket</a></li>
                        <li><a href="#"><i class="fa fa-angle-right"></i> Jeans</a></li>
                        <li><a href="#"><i class="fa fa-angle-right"></i> Jewellery</a></li>
                        <li><a href="#"><i class="fa fa-angle-right"></i> Electronics</a></li>
                        <li><a href="#"><i class="fa fa-angle-right"></i> Sports</a></li>
                        <li><a href="#"><i class="fa fa-angle-right"></i> Technology</a></li>
                        <li><a href="#"><i class="fa fa-angle-right"></i> Watches</a></li>
                        <li><a href="#"><i class="fa fa-angle-right"></i> Accessories</a></li>
                    </ul>
                </div>
            </section>
            <section class="panel">
                <header class="panel-heading">Price Range</header>
                <div class="panel-body">
                    <div class="slider-info">
                        <span id="slider-range-amount">Price Range: $0 - $1000</span>
                    </div>
                </div>
            </section>
            <section class="panel">
                <header class="panel-heading">Filter</header>
                <div class="panel-body">
                    <form role="form product-form">
                        <div class="form-group">
                            <label>Brand</label>
                            <select class="form-control">
                                <option>Wallmart</option>
                                <option>Catseye</option>
                                <option>Moonsoon</option>
                                <option>Textmart</option>
                            </select>
                        </div>
                        <div class="form-group">
                            <label>Color</label>
                            <select class="form-control">
                                <option>White</option>
                                <option>Black</option>
                                <option>Red</option>
                                <option>Green</option>
                            </select>
                        </div>
                        <div class="form-group">
                            <label>Type</label>
                            <select class="form-control">
                                <option>Small</option>
                                <option>Medium</option>
                                <option>Large</option>
                                <option>Extra Large</option>
                            </select>
                        </div>
                        <button class="btn" type="submit">Filter</button>
                    </form>
                </div>
            </section>
            <section class="panel">
                <header class="panel-heading">Best Seller</header>
                <div class="panel-body">
                    <div class="best-seller">
                        <article class="media">
                            <a class="pull-left thumb p-thumb">
                                <img src="https://codezillaye.com/wp-content/uploads/2024/06/cropped-codezillaye-high-resolution-logo.png" />
                            </a>
                            <div class="media-body">
                                <a href="#" class="p-head">Item One Title</a>
                                <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
                            </div>
                        </article>
                        <article class="media">
                            <a class="pull-left thumb p-thumb">
                                <img src="https://codezillaye.com/wp-content/uploads/2024/06/cropped-codezillaye-high-resolution-logo.png" />
                            </a>
                            <div class="media-body">
                                <a href="#" class="p-head">Item Two Title</a>
                                <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
                            </div>
                        </article>
                        <article class="media">
                            <a class="pull-left thumb p-thumb">
                                <img src="https://codezillaye.com/wp-content/uploads/2024/06/cropped-codezillaye-high-resolution-logo.png" />
                            </a>
                            <div class="media-body">
                                <a href="#" class="p-head">Item Three Title</a>
                                <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
                            </div>
                        </article>
                    </div>
                </div>
            </section>
        </div>
        <div class="col">
            <div class="row product-list">
                <div class="col-md-4">
                    <section class="panel">
                        <div class="pro-img-box">
                            <img src="https://codezillaye.com/wp-content/uploads/2024/06/cropped-codezillaye-high-resolution-logo.png" alt="" />
                            <a href="#" class="adtocart">
                                <i class="fa fa-shopping-cart"></i>
                            </a>
                        </div>
                        <div class="panel-body text-center">
                            <h4><a href="#" class="pro-title">Item One</a></h4>
                            <p class="price">$100.00</p>
                        </div>
                    </section>
                </div>
                <div class="col-md-4">
                    <section class="panel">
                        <div class="pro-img-box">
                            <img src="https://codezillaye.com/wp-content/uploads/2024/06/cropped-codezillaye-high-resolution-logo.png" alt="" />
                            <a href="#" class="adtocart">
                                <i class="fa fa-shopping-cart"></i>
                            </a>
                        </div>
                        <div class="panel-body text-center">
                            <h4><a href="#" class="pro-title">Item Two</a></h4>
                            <p class="price">$200.00</p>
                        </div>
                    </section>
                </div>
                <div class="col-md-4">
                    <section class="panel">
                        <div class="pro-img-box">
                            <img src="https://codezillaye.com/wp-content/uploads/2024/06/cropped-codezillaye-high-resolution-logo.png" alt="" />
                            <a href="#" class="adtocart">
                                <i class="fa fa-shopping-cart"></i>
                            </a>
                        </div>
                        <div class="panel-body text-center">
                            <h4><a href="#" class="pro-title">Item Three</a></h4>
                            <p class="price">$300.00</p>
                        </div>
                    </section>
                </div>
                <div class="col-md-4">
                    <section class="panel">
                        <div class="pro-img-box">
                            <img src="https://codezillaye.com/wp-content/uploads/2024/06/cropped-codezillaye-high-resolution-logo.png" alt="" />
                            <a href="#" class="adtocart">
                                <i class="fa fa-shopping-cart"></i>
                            </a>
                        </div>
                        <div class="panel-body text-center">
                            <h4><a href="#" class="pro-title">Item Four</a></h4>
                            <p class="price">$400.00</p>
                        </div>
                    </section>
                </div>
                <div class="col-md-4">
                    <section class="panel">
                        <div class="pro-img-box">
                            <img src="https://codezillaye.com/wp-content/uploads/2024/06/cropped-codezillaye-high-resolution-logo.png" alt="" />
                            <a href="#" class="adtocart">
                                <i class="fa fa-shopping-cart"></i>
                            </a>
                        </div>
                        <div class="panel-body text-center">
                            <h4><a href="#" class="pro-title">Item Five</a></h4>
                            <p class="price">$500.00</p>
                        </div>
                    </section>
                </div>
                <div class="col-md-4">
                    <section class="panel">
                        <div class="pro-img-box">
                            <img src="https://codezillaye.com/wp-content/uploads/2024/06/cropped-codezillaye-high-resolution-logo.png" alt="" />
                            <a href="#" class="adtocart">
                                <i class="fa fa-shopping-cart"></i>
                            </a>
                        </div>
                        <div class="panel-body text-center">
                            <h4><a href="#" class="pro-title">Item Six</a></h4>
                            <p class="price">$600.00</p>
                        </div>
                    </section>
                </div>
            </div>
          
        </div>
    </div>
</body>
</html>
body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
}
.container {
    display: flex;
    flex-direction: row;
    width: 1550px;
    margin: 0 .5rem;
   
    row-gap: 1rem;
    flex-wrap: wrap;
    padding: 20px;
}
.col-md-3, .col-md-9 {
    /* padding: 0 15px; */
}
/* .col-md-3 {
    flex: 0 0 25%;
    max-width: 25%;
} */
.col{
    /* padding: 10px; */
    /* flex: 0 0 50%; */
    max-width: 50%;
    /* width: 768px; */
    margin: 0;
}
.col {
    /* flex: 0 0 75%; */
    /* max-width: 50%; */
}
.panel {
    background: #fff;
    border: 1px solid #ddd;
    margin-bottom: 20px;
}
.panel-heading {
    background: #f5f5f5;
    padding: 10px;
    font-weight: bold;
}
.panel-body {
    padding: 10px;
}
.nav {
    list-style: none;
    padding: 0;
}
.nav li {
    margin-bottom: 5px;
}
.nav li a {
    text-decoration: none;
    color: #333;
}
.nav .active > a {
    color: #007bff;
}
.product-form .form-group {
    margin-bottom: 15px;
}
.form-control {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
}
.btn {
    display: inline-block;
    padding: 8px 12px;
    color: #fff;
    background-color: #007bff;
    border: none;
    cursor: pointer;
    text-align: center;
}
.best-seller .media {
    display: flex;
    align-items: flex-start;
    margin-bottom: 10px;
}
.best-seller .media img {
    margin-right: 10px;
    width: 50px;
}
.product-list {
    display: flex;
    flex-wrap: wrap;
    /* max-width: 50%; */
    /* margin-right: -15px; */
    margin-left: 15px;
}
.product-list .col-md-4 {
    flex: 0 0 33.333%;
    max-width: 33.333%;
    padding-right: 15px;
    padding-left: 15px;
    margin-bottom: 20px;
}
.pro-img-box {
    position: relative;
    overflow: hidden;
}
.pro-img-box img {
    width: 100%;
    height: auto;
}
.adtocart {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #007bff;
    color: #fff;
    padding: 10px;
    border-radius: 50%;
    text-decoration: none;
    -webkit-border-radius:;
    -moz-border-radius:;
    -ms-border-radius:;
    -o-border-radius:;
}
.panel-body.text-center h4 {
    margin: 10px 0;
    font-size: 16px;
}
.col.search {
    display: flex;
    flex-direction: column;

}
.panel-body .pull-right ul {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.panel-body .pull-right ul li {
   margin: 1rem;
}
.panel-body .pull-right ul li a {
   padding: 1rem;
   background-color: #007bff;
   border-radius: 4px;
   -webkit-border-radius: 4px;
   -moz-border-radius: 4px;
   -ms-border-radius: 4px;
   -o-border-radius: 4px;
}
.panel-body.text-center .price {
    font-size: 14px;
    color: #333;
}