.calculator-box {
    padding: 30px;
    background-color: #fff;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

.form-control {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #e5e5e5;
    border-radius: 5px;
    font-size: 14px;
}

.result-box {
    text-align: center;
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 5px;
    margin-bottom: 15px;
    min-height: 150px;
    align-content: center;
}

.result-box h5 {
    margin-bottom: 10px;
    font-size: 16px;
    color:#d21e2b;
}

.result-box h3 {
    margin: 0;
    font-size: 24px;
    color: black;
    font-weight: 700;
}

@media (max-width: 767px) {
    .calculator-box {
        padding: 20px;
    }

    .result-box {
        margin-bottom: 20px;
    }
}