.alerta{
    padding: 10px 10px 10px 30px;
    text-transform: uppercase;
    margin: 15px 0;
    font-size: 15px;
    font-weight: bold;
}
.alerta__error {
    background-color: lighten(red, 60%);
    border-left: 0.5rem solid red;
    color: red;
}

.alerta__exito {
    background-color: lighten(green, 60%);
    border-left: 0.5rem solid green;
    color: green;
}