body {
    padding: 20px;
    background-color: #f8f9fa;
}
.card {
    margin-bottom: 20px;
    border: 1px solid #dee2e6;
}
.card-body {
    background-color: #ffffff;
    border-radius: 0.25rem;
}
.card-title {
    color: #343a40; /* Dark gray color */
}
.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}
.btn-primary:hover {
    background-color: #0056b3;
    border-color: #004085;
}
.form-control {
    border-radius: 0.25rem;
}
#results {
    margin-top: 20px;
}