#popupOverlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}
/* Modal box */
#popupBox {
    background: #fff;
    padding: 20px 30px;
    border-radius: 6px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    max-width: 90%;
    text-align: center;
}

    #popupBox p {
        text-align:left;
        white-space: pre-line;
        font-size:20px;
        color:darkred;
    }

    #popupBox button {
        float: left;
        margin-top: 15px;
        padding: 8px 16px;
        border-radius: 20px;
        border-color: transparent;
        border-radius: 5px;
        font-size: 1.5rem;
        cursor: pointer;
    }