How Can I Apply CSS Styles Selectively to Opera Browsers?

How to Apply CSS Selectively to Opera Browsers

Wondering if you can restrict CSS styling to specific browsers? It's possible to make certain CSS rules visible exclusively to Opera browsers.

Opera-Specific CSS Selectors

Opera supports several CSS selectors that target its browser:

-o-prefocus: Selects elements when they receive focus in Opera.

Example:

noindex:-o-prefocus, .my-class {
  color: #fff;
}

This code will apply the white text color to the element with the .my-class class only when it receives focus in Opera. Note that noindex is included to prevent search engines from indexing this CSS rule.

This approach works effectively for Opera 10.63 and later versions.

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