.backgound-body {
    background-color: #f8f9fa;
}

.card-size {
    max-width: 600px;
    margin: 40px auto;
    border-radius: 15px;
}

.form-control:focus {
    border-color: #28a745;
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

.btn-success {
    border-radius: 8px;
    padding: 10px 20px;
    font-weight: 500;
}

h4 {
    margin-bottom: 24px;
    color: #28a745;
}