body, html {
    margin: 0;
    padding: 0;
    font-family: 'Nunito', sans-serif;
    line-height: 1.6;
    color: #333;
    background-image: url('../img/background.png');
    background-size: cover;
    background-attachment: fixed;
}

header {
    background-color: rgba(0, 0, 0, 0.8);
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
}

nav ul li {
    margin: 0 1rem;
    position: relative;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background-color 0.3s;
}

nav ul li a:hover,
nav ul li a.active {
    background-color: rgba(255, 255, 255, 0.2);
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: rgba(0, 0, 0, 0.8);
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content a {
    color: #fff;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

.dropdown-content a:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

main {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

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

footer {
    background-color: rgba(0, 0, 0, 0.8);
    color: #fff;
    text-align: center;
    padding: 1rem;
    position: fixed;
    bottom: 0;
    width: 100%;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    }
    th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
    }
    th {
    background-color: #f2f2f2;
    font-weight: bold;
    }
    tr:nth-child(even) {
    background-color: #f9f9f9;
    }