body {
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    padding: 0;
    background: #fafafa;
    color: #333;
    line-height: 1.6;
}

header {
    background: #2c3e50;
    color: #fff;
    padding: 10px 0;
    text-align: center;
}

nav a {
    color: #ecf0f1;
    margin: 0 15px;
    text-decoration: none;
}

.logo {
    width: 100px;
    margin: 10px auto;
}

.container, main {
    padding: 20px;
}

footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 15px;
    position: relative;
    bottom: 0;
    width: 100%;
}

button {
    background: #27ae60;
    color: white;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
}

.banner {
    width: 100%;
    margin-top: 20px;
    border-radius: 8px;
}