.transport-calculator-container {
    max-width: 600px;
    margin: auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    font-family: Arial, sans-serif;
}

.transport-calculator-container h1 {
    text-align: center;
    color: #333;
}

.transport-calculator-container label {
    display: block;
    margin-top: 15px;
    color: #555;
}

.transport-calculator-container select {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.transport-calculator-container button {
    width: 100%;
    padding: 10px;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

.transport-calculator-container button:hover {
    background-color: #218838;
}

.transport-calculator-container .result {
    margin-top: 20px;
    padding: 10px;
    background-color: #e9ecef;
    border-radius: 4px;
    text-align: center;
    font-size: 18px;
    color: #333;
}