body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
}

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

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

nav li {
    float: left;
}

nav li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

nav li a:hover {
    background-color: #111;
}

.hero {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 100px;
}

.features {
    display: flex;
    justify-content: space-around;
    padding: 50px;
}

.feature {
    text-align: center;
    border: 1px solid #ddd;
    padding: 20px;
}

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