.investment-calculator {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f5f5f5;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    font-family: Arial, sans-serif;
}

.investment-calculator h2 {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #666;
    font-weight: bold;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.result {
    margin-top: 20px;
    padding: 15px;
    background-color: #e7f3fe;
    border: 1px solid #b6d4fe;
    border-radius: 4px;
}

.result p {
    margin: 0;
    font-size: 18px;
    color: #333;
}

.result strong {
    color: #0056b3;
}

@media (max-width: 480px) {
    .investment-calculator {
        padding: 15px;
    }
    
    .form-group input,
    .form-group select {
        font-size: 14px;
    }
    
    .result p {
        font-size: 16px;
    }
}