style.css

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: #333;
    color: #fff;
    padding: 20px;
    text-align: center;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    display: inline;
    margin-right: 20px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
}

.laptop-list {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    margin: 20px 0;
}

.laptop {
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 20px;
    width: 30%;
    margin-bottom: 20px;
}

.laptop img {
    width: 100%;
    border-radius: 5px;
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px 0;
    position: fixed;
    bottom: 0;
    width: 100%;
}