body {
    font-family: Arial, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    gap: 30px;
}
.panel_de, .panel_iz {
    flex: 1;
}
.panel_de{
    margin-top: 120px;
}
.opciones {
    padding: 10px;
    margin: 5px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
    background: #f9f9f9;
}
#paketaxoR {
    width: 250px;
    height: 250px;
    margin: 0 auto 50px;
    display: flex;
    align-items: center;
    justify-content: center; 
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    background: #f0f0f0;
}
#lista {
    width: 150px;
    text-align: center;
    margin-left: 100px;
    height: 90px;
    background: #f5f5f5;
    padding: 15px;
    border-radius: 8px;
    
}
button {
    padding: 12px 25px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    margin-top: 15px;
    width: 100%;
}
button:hover {
    background: #45a049;
}