body {
    margin: 0;
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #ffffff;
    color: #333;
}


header {
    background-color: #000000; 
    color: rgb(255, 255, 255); 
    padding: 10px 0;
    text-align: center;
}

header h1 {
    margin: 0;
}


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

header nav ul li {
    display: inline;
}

header nav ul li a {
    color: white; 
    text-decoration: none; 
}
header nav ul li a:hover {
    text-decoration: underline; 
}


section {
    padding: 20px;
    margin: 20px;
    background-color: white;
    border-radius: 8px; 
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}


footer {
    text-align: center;
    padding: 10px;
    background-color: #333;
    color: white;
    position: fixed;
    width: 100%;
    bottom: 0;
}
body {
    background-image: url(https://th.bing.com/th/id/OIP.Ua5HXTxAAepbPNy81fPd_QHaEo?rs=1&pid=ImgDetMain); 
    background-size: cover; 
    background-position: center center;
    background-attachment: fixed; 
    height: 100vh; 
    margin: 0;
  }