.warningbox {
    position: fixed;
    top: 450px;
    left: 50%;
    transform: translateX(-50%);

    width: calc(100% - 40px);
    max-width: 700px;

    padding: 18px 24px;

    background: #fff3cd;
    color: #664d03;

    border: 1px solid #ffecb5;
    border-left: 6px solid #ffc107;
    border-radius: 8px;

    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);

    font-size: 16px;
    line-height: 1.5;
    text-align: center;

    z-index: 999999;
    display: block;
}