body {
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    background: linear-gradient(to right, #0f2027, #203a43, #2c5364);
    color: white;
    text-align: center;
}
.container {
    margin: 100px auto;
    max-width: 600px;
    padding: 20px;
}
h1 {
    font-size: 2em;
}
.cta {
    display: inline-block;
    margin-top: 30px;
    padding: 15px 30px;
    background: #ff9900;
    color: black;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
}