body {
    font-family: Arial, sans-serif;
    margin: 20px;
    padding: 20px;
}

input {
    margin-bottom: 10px;
}

button {
    margin-top: 10px;
    padding: 5px 15px;
}

#resultado {
    font-weight: bold;
}

#explicacion {
    color: gray;
}