body {
    font-family: 'Tahoma', 'Arial', sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
    direction: rtl;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    color: #333;
    font-size: 2.5em;
}

main {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

p {
    font-size: 1.2em;
    line-height: 1.6;
    color: #555;
}

footer {
    text-align: center;
    margin-top: 30px;
    color: #888;
}