.card {
    border-radius: 10px;
}

.card-header {
    border-radius: 10px 10px 0 0;
}

.form-control:focus {
    border-color: #28a745;
    box-shadow: 0 0 5px rgba(40, 167, 69, 0.5);
}

.btn-success {
    transition: background-color 0.3s;
}

.btn-success:hover {
    background-color: #218838;
}