* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f4f4f4;
    padding: 20px;
}

header {
    text-align: center;
    padding: 40px 0;
    background: #333;
    color: #fff;
}

header h1 {
    font-size: 2.5em;
}

main {
    max-width: 1100px;
    margin: 20px auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px #ccc;
}

.features, .cta {
    text-align: center;
    margin: 20px 0;
}

ul {
    list-style: none;
}

ul li {
    font-size: 1.2em;
    margin: 10px 0;
}

.btn {
    display: inline-block;
    text-decoration: none;
    color: #fff;
    background: #333;
    padding: 10px 30px;
    border-radius: 5px;
    transition: 0.3s;
}

.btn:hover {
    background: #555;
}

footer {
    text-align: center;
    padding: 10px 0;
    background: #333;
    color: #fff;
    margin-top: 20px;
}