html,
body {
    height: 100%;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f8f9fa;
}

.card {
    width: 100%;
    max-width: 400px;
    background-color: white;
    border: none;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card-header {
    background-color: #007bff;
    color: white;
    text-align: center;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
    padding: 20px;
}

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

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

.form-check-input:checked {
    background-color: #007bff;
    border-color: #007bff;
}

@media (max-width: 576px) {
    .card {
        height: 100%;
        border-radius: 0;
    }

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