body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


header {
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 20px;
    text-align: center;
}


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

nav ul li {
    display: inline;
    margin: 0 15px;
}

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


footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px;
}


.home-page {
    background: url('earth-11595_1280.jpg') repeat;
    padding: 20px;
}


.about-page {
    background: url('earth-1756274_1280.jpg') no-repeat center center;
    background-size: cover;
    height: 100vh; 
    padding: 20px;
}


section {
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    margin: 20px 0;
}


h1, h2 {
    color: #333;
}


p {
    color: #555;
}