body {
    margin:0;
    font-family: Arial;
}

header {
    background:#111;
    color:#fff;
    padding:15px;
    display:flex;
    justify-content:space-between;
    align-items:center;
}

header a {
    color:#fff;
    margin:0 10px;
    text-decoration:none;
}

.hero {
    background:#007bff;
    color:#fff;
    padding:80px;
    text-align:center;
}

.features, .products {
    display:flex;
    justify-content:space-around;
    padding:30px;
}

.box, .card {
    background:#f2f2f2;
    padding:20px;
    width:22%;
    border-radius:10px;
    text-align:center;
}

.contact form {
    width:300px;
    margin:auto;
    display:flex;
    flex-direction:column;
}

.contact input, .contact textarea {
    margin:10px 0;
    padding:10px;
    border-radius:5px;
    border:1px solid #999;
}

button {
    padding:10px;
    background:#007bff;
    color:white;
    border:none;
    border-radius:5px;
}