body {
    background-color: #f8f9fa;
}

h1 {
    margin-top: 20px;
    margin-bottom: 20px;
    color: #343a40;
}

.card {
    margin-bottom: 20px;
}

.navbar {
    margin-bottom: 20px;
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}