body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 500px;
    margin: 50px auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
}

.form-row, .form-row-inline {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
}

.form-row-inline {
    justify-content: flex-start;
}

.form-group {
    flex: 1;
    margin-right: 10px;
}

.form-group-small {
    flex: 0.5;
    margin-right: 10px;
}

label {
    font-weight: bold;
}

input[type="text"], select, input[type="number"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

button {
    padding: 10px;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 10px;
    width: 100%;
}

button:hover {
    opacity: 0.9;
}

.add-box-btn {
    background-color: #007bff;
}

.calculate-btn {
    background-color: #ffcc00;
}

.save-image-btn {
    background-color: #28a745;
}

.save-excel-btn {
    background-color: #17a2b8;
}

.save-csv-btn {
    background-color: #6c757d;
}

.remove-btn {
    background-color: #dc3545;
    margin-top: 0;
    width: 100%;
}

#result {
    margin-top: 20px;
    font-size: 14px;
    color: #333;
}

.bold-large {
    font-size: 18px;
    font-weight: bold;
}

.detail {
    font-size: 12px;
    color: #666;
}

.yarn-set {
    border: 1px solid #ddd;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 4px;
}