.fasadevask-kalkulator {
    max-width: 400px;
    padding: 20px;
    border: 2px solid #ccc;
    border-radius: 8px;
    background: #f9f9f9;
    text-align: center;
}

.fasadevask-kalkulator input, 
.fasadevask-kalkulator button {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border-radius: 5px;
}

.fasadevask-kalkulator button {
    background: #0073aa;
    color: white;
}