#mensagens-sistema{
    position: fixed;
    top: -80px;
    width: 100%;
    height: 80px;
    background-color: rgba(255,255,255,1);
    opacity: 0;
    transition: 0.5s;
    z-index: 2000;
    padding: 0px;
    margin: 0px;
}
#mensagens-sistema-row{
    padding: 0px;
    margin: 0px;
    width: 100%;
    height: 80px;
    background-color: #FFF;
    border-bottom: 1px solid #FFF;
    color: #FFF;
    text-align: center;
    font-weight: bold;
}