div#ba-calculator {
    max-width: 300px;
    background-color: #F9EDEF;
    border: 3px solid #C91F40;
    padding: 5px 10px;
}

div#ba-calculator .btn-red, div#ba-calculator .btn-red:hover, div#ba-calculator .btn-red:focus, div#ba-calculator .btn-red:active {
    background-color: #c91f40 !important;
    color: #FFF !important;
}

div#ba-calculator .invalid-feedback { 
 display: block;
}

div#ba-calculator h3 {
    font-size: 24px;    
}

div#ba-calculator #paneResult {
    display:none ;
    text-align:center;
    background-color: #C91F40;
    color: #FFF;
    margin: 13px 0 5px 0;
}

div#ba-calculator #paneResult>span {
    font-size: 32px;
}