.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
}
.overlay-content {
    background: white;
    padding: 20px;
    border-radius: 5px;
    text-align: center;
}
.hidden {
    display: none;
}
.overlay-trigger {
    margin-top: 10px;
    padding: 10px 20px;
    background-color: #0073aa;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
}
.overlay-trigger:hover {
    background-color: #005177;
}