.stations-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 20px;
    background-color: white;
    border: 1px solid #ccc;
    z-index: 1000;
    max-width: 300px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.stations-popup .close-popup {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 20px;
    color: #333;
    cursor: pointer;
}

.stations-popup .close-popup:hover {
    color: #ff0000;
}