.bri-calculator {
    max-width: 400px;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin: 20px auto;
}

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

.input-group label {
    display: block;
    margin-bottom: 5px;
    color: #333;
}

.input-group select {
    margin-bottom: 10px;
    padding: 5px;
    border-radius: 4px;
    border: 1px solid #ddd;
}

.input-group input {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

.feet-inches-inputs {
    display: flex;
    gap: 10px;
}

.feet-inches-inputs input {
    width: 50%;
}

.bri-calculator button {
    width: 100%;
    padding: 10px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

.bri-calculator button:hover {
    background-color: #0056b3;
}

.result {
    margin-top: 20px;
    padding: 10px;
    text-align: center;
    font-weight: bold;
    color: #333;
}