body {
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    padding: 0;
    background: #fffaf2;
    color: #333;
}
header {
    background: #f5b700;
    padding: 1em;
    text-align: center;
}
nav a {
    margin: 0 10px;
    text-decoration: none;
    color: #222;
}
main {
    padding: 2em;
    max-width: 800px;
    margin: auto;
}
ul li {
    margin-bottom: 10px;
}
button {
    background-color: #f5b700;
    color: #000;
    padding: 0.5em 1em;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}
input[type="email"] {
    padding: 0.5em;
    margin-right: 0.5em;
    width: 250px;
}
footer {
    background: #eee;
    padding: 1em;
    text-align: center;
    margin-top: 2em;
}