body {
    background-color: #f5f5f5;
}
.container {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
h2 {
    color: #333;
    margin-bottom: 20px;
}
.form-section {
    margin-bottom: 15px;
}
.form-section h4 {
    margin-bottom: 10px;
}
.form-section input, .form-section button {
    margin: 5px 0;
}
.btn-primary, .btn-danger, .btn-info {
    width: 100%;
}