.custom-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.4);
}
.custom-modal-content {
    background-color: white;
    margin: 15% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-width: 450px;
    text-align: center;
    border-radius: 5px;
}
.close-btn {
    color: black;
    float: right;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
}