#installBanner, #iosInstallBanner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #f9f9f9;
    padding: 15px;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    font-family: sans-serif;
    text-align: center;
    z-index: 9999;
    display: none;
}

    #installBanner button, #iosInstallBanner button {
        margin-top: 10px;
        padding: 8px 15px;
        background-color: #007aff;
        color: white;
        border: none;
        border-radius: 5px;
        font-size: 14px;
    }

    #iosInstallBanner img {
        width: 100px;
        margin-top: 10px;
    }