I have a php payment button on a html page, when the user clicks on it, he get redirected to a url on another server to complete the payment. Anyway the loading time before it gets redirected is often too much and can confuse the user with several seconds of inactivity. Can you advise how can I make loading page with message text and animation gif that appears as soon as the user clicks the button? Thus the user will be aware that the page is loading and he will be soon redirected to approprieted url?
Thanks