How to get donate button in site?

Question

I need this button.Really

Answer 1

1. <input type="submit" name="donate" value="Donate">
2. <button>Donate</button>

Answer 2

<button>Donate</button>

Answer 3

well take a look at this https://developer.paypal.com/docs/classic/paypal-payments-standard/integration-guide/html_example_donate/