.btn{
    height: 100%;
    width: 100%; 
    font-size: 20px; 
    border: 1px solid black !important;
    border-radius: 0px !important;
}

.numero{
    width: 100%; 
    line-height: 1.5em; 
    font-size: 1.5em; 
    padding: 10px; 
    text-align: right;
    margin-bottom: 10px;
}