body {
    margin: 0;
    padding: 10px;
    background-color: #f0f0f0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}


.ana-kapsayici {
    display: flex;
    flex-direction: column; 
    gap: 10px;
}


.ust-bilgi, .alt-bilgi {
    background-color: #4CAF50;
    color: white;
    padding: 15px;
    text-align: center;
}

.orta-bolum {
    display: flex;
    flex-direction: row; 
    gap: 10px;
}


.sol-menu {
    flex: 1; 
    background-color: #ddd;
    padding: 10px;
}

.ana-icerik {
    flex: 3; 
    background-color: white;
    padding: 20px;
    min-height: 250px;
}

.sag-panel {
    flex: 1; 
    background-color: #eee;
    padding: 10px;
}

ul {
    padding-left: 20px;
}

li {
    margin-bottom: 5px;
}