.calculator {
    max-width: 600px;
    margin: auto;
    padding: 20px;
    background-color: #ffffff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
}

.calculator h2 {
    text-align: center;
    color: #333;
}

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

.category-row label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.category-row input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    margin-bottom: 10px;
}

.output {
    margin-top: 20px;
    padding: 10px;
    background-color: #e6f7e6;
    border: 1px solid #bde0bd;
    border-radius: 5px;
}

.category-breakdown {
    margin-top: 10px;
    padding: 10px;
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 5px;
}