body {
    background-color: #fff;
    font-family: Arial, sans-serif;
}

.container {
    max-width: 600px;
    margin: 50px auto;
    padding: 20px;
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header {
    font-size: 24px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 20px;
}

.form-label {
    font-weight: bold;
}

.form-control {
    margin-bottom: 15px;
    padding: 10px;
    font-size: 14px;
    border: 1px solid #ced4da;
    border-radius: 5px;
}

.invalid-feedback {
    color: #dc3545;
    font-size: 14px;
    margin-top: -10px;
    margin-bottom: 10px;
}

hr {
    margin: 20px 0;
}

h5 {
    margin-bottom: 15px;
    color: #343a40;
}

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

.btn-link {
    text-decoration: none;
    color: #007bff;
}

.btn-link:hover {
    text-decoration: underline;
}

.alert {
    margin-bottom: 15px;
    padding: 10px;
    border-radius: 5px;
}