* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: #f8f9fa;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: #0056b3;
    color: white;
    padding: 20px 0;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

header h1 {
    margin: 0;
    font-size: 2rem;
}

header h1 {
    margin: 0;
    font-size: 2rem;
}

nav {
    background-color: #004085;
    padding: 10px;
}

nav a {
    color: white;
    margin: 0 15px;
    text-decoration: none;
    font-weight: 500;
}

nav a:hover {
    text-decoration: underline;
}

main {
    flex: 1;
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

footer {
    background-color: #333;
    color: #ccc;
    text-align: center;
    padding: 15px 0;
    margin-top: auto;
    font-size: 0.9rem;
}