notification.css

@import url(https://fonts.googleapis.com/css?family=Ubuntu);

commander-message {
    font-family: Ubuntu, sans-serif !important;
    color: white !important;
    position: fixed !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    border: 1px solid !important;
    border-color: rgba(0, 0, 0, 0.2) !important;
    box-shadow: 4px 2px rgba(0, 0, 0, 0.4) !important;
    background-color: #434343 !important;
    padding: 10px !important;
    width: 330px !important;
    height: 80px !important;
    z-index: 9999999999 !important;
}

commander-message > commander-message-content {
    float: right;
    width: 245px;
    overflow-wrap: break-word;
    font-size: small;
}

commander-message > commander-message-dismiss {
    text-align: right;
    cursor: pointer;
    font-size: small;
    font-weight: bold;
    display: block;
    line-height: 0px;
    padding-bottom: 5px;
}

commander-message > commander-message-dismiss:before {
    content: "×";
}

commander-message > img {
    padding-right: 5px;
    width: 52px;
    height: 48px;
}