.dev-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 99999;
    background: #d32f2f;
    color: #fff;
    text-align: center;
    font-weight: 700;
    font-size: 12px;
    letter-spacing: .05em;
    padding: 3px 0;
    font-family: sans-serif;
    pointer-events: none;
}