body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: Arial, sans-serif;
}

.container {
    position: relative;
    width: 100%;
    height: 100%;
    background: url('background.png') no-repeat center center fixed;
    background-size: cover;
}

.header {
    position: absolute;
    top: 20px;
    right: 20px;
}

.nav-button {
    margin: 5px;
    padding: 10px 20px;
    font-size: 16px;
    background-color: rgba(255, 255, 255, 0.8);
    border: none;
    cursor: pointer;
    border-radius: 5px;
}

.nav-button:hover {
    background-color: rgba(255, 255, 255, 1);
}

.content {
    text-align: center;
    color: white;
    font-size: 48px;
}