.botonNuevo
{
    background: brown;
    color: white;
    padding: 3px, 1px, 3px, 1px;
    margin: 0;
    border: solid;
    border-radius: 5px;
    border-color: black;
    border-width: thin;
}

    .botonNuevo:hover
    {
        background-color: darkred;
        background: brown;
        color: white;
        padding: 3px, 1px, 3px, 1px;
        margin: 0;
        border: solid;
        border-radius: 5px;
        border-color: black;
        border-width: thin;
    }