body {
    font-family: Arial, Helvetica, sans-serif;
    color: #333;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
}

.container {
    margin-top: 20px;
    margin-bottom: 20px;
    padding: 20px;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    text-align: center;
    color: #222;
    margin-bottom: 20px;
}

h2 {
    size: 2rem;
}
label {
    font-weight: bold;
    color: #444;
}

.form-group {
    margin-bottom: 20px;
}

.table {
    margin-top: 20px;
    width: 100%;
}

.table th {
    background-color: #007bff;
    color: white;
    text-align: center;
}

.table td {
    text-align: center;
    padding: 10px;
    border: 1px solid #ddd;
}

.btn {
    background-color: #007bff;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

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

.invalid-feedback {
    color: red;
    font-size: 0.9em;
    margin-top: 5px;
}