body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(to bottom, #3498db, #2980b9);
    color: #2c3e50;
    font-size: 18px;
}

header {
    text-align: center;
    padding: 20px;
    background-color: #ecf0f1;
    color: #2c3e50;
}

nav {
    display: flex;
    justify-content: center;
    background: #bdc3c7;
    padding: 10px 0;
    margin-bottom: 20px;
}

nav a {
    color: #2c3e50;
    margin: 0 15px;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 5px;
    border: 1px solid #34495e;
}

nav a:hover {
    background-color: #34495e;
    color: #fff;
}

.banner {
    width: 100%;
    height: 300px;
    background: url('banner.jpg') no-repeat center center;
    background-size: cover;
}

section {
    padding: 20px;
    background-color: #ecf0f1;
    margin: 20px;
    border-radius: 10px;
    line-height: 1.8;
}

footer {
    background-color: #34495e;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    position: relative;
    bottom: 0;
    width: 100%;
}