div.master-message {
    display: none;
    position: fixed;
    z-index: 1001;
    top: 20px;
    left: 50%;
    margin-left: -300px;
    width: 600px;
    height: auto;
    overflow: hidden;
    border-radius: 10px;
    border-radius: 1rem;
    box-shadow: 0.5rem 0.5rem 0.5rem rgba(0,0,0,0.2);
    border: 1px solid #454545;
    padding: 10px;
    padding: 1rem;
    background-color: #fff;
    background-color: #fff;
    color: #000;
    color: #000;
    font-size: 21px;
    font-size: 2.1rem;
    font-weight: bold;
    text-align: center;
    opacity: 0.8;
    font-size:1.5em;
    box-sizing:border-box;
}
@media screen and (max-width:600px) {
    div.master-message {
        left:0px;
        margin-left:0px;
        width:100vw;
    }

}

    div.master-message.success {
        background-color: #00ff7f;
    }

    div.master-message.warning {
        background-color: #fc0;
    }

    div.master-message.error {
        background-color: #ff4747;
    }