How to make an authorization button like Vkontakte?

Question

css

Tell me the CSS code of the button that works when the user clicks the "Login" button while authorizing Vkontakte. those. something like "Sending a request", only a running line like on VK.

Answer 1

Goodnight.
As I understand it, the output of the avatar in this piece of code?
For starters, try printing out just the value of the src attribute and see what happens.
Then check for the presence of the image in the specified path.
Then the permissions to the image file should be 644.
And most importantly, you have done something here, in the very nesting of tags.
I think this would be more correct:
Substitute the value of the src attribute must be already processed, without any htmlspecialchars. First process, and then substitute the result.