body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    color: #333;
    background-color: #f4f4f4;
}

header {
    background: #2c3e50;
    color: #ffffff;
    padding: 1rem 0;
    text-align: center;
}

header h1 {
    margin: 0;
    margin-bottom: 10px;
}

header a {
    color: #ffffff;
    text-decoration: none;
    text-transform: uppercase;
    font-size: 16px;
}

nav ul {
    padding: 0;
    list-style: none;
}

nav li {
    display: inline;
    padding: 0 20px;
}

main {
    padding: 20px;
    max-width: 800px;
    margin: 20px auto;
    background: #ffffff;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    border-radius: 5px;
}

section {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

section:last-child {
    border-bottom: none;
}

footer {
    text-align: center;
    padding: 10px;
    background: #2c3e50;
    color: #ffffff;
    position: fixed;
    bottom: 0;
    width: 100%;
}