body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(to right, #74ebd5, #9face6);
    margin: 0;
    padding: 0;
}

header ul.nav {
    background-color: #333;
}

header ul.nav .nav-link {
    color: #fff;
    transition: background-color 0.3s;
}

header ul.nav .nav-link:hover {
    background-color: #575757;
}

main {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

h1, h2, h3 {
    color: #2c3e50;
}

table.table {
    background-color: #fff;
}

footer {
    background-color: #333;
    color: #fff;
    font-size: 0.9rem;
}