Is it possible to avoid the black overlay when clicking links on Safari on iPhone?

Is it possible to avoid the black overlay when clicking links on Safari on iPhone?

there is something like this for the web version of Safari

:focus {
outline: 0;
}

so can I avoid to see a black box when i click anything on a web page on for safari on iPhone开发者_如何学编程?

---

a { -webkit-tap-highlight-color: transparent; }