.alerta {
    position: fixed;
    display: none;
    float: right;
    top: 20px;
    right: 20px;
}

.btn-1 {
    background-color: #00819b;
    color: #fff;
    border: 1pt solid #00819b;
}

.btn-1:hover {
    background-color: #016c82;
    color: #fff;
    border: 1pt solid #016c82;
}