How do I update safari browser on my I Pad

My iOS is up-to-date yet a website says I need Safari 7.

Safari is updated automatically whenever there's an iOS update.

Check Settings > General > Software Update

If you are using an older model iPad, you may have issues using Safari on some websites.

Safari's version is tied to iOS, if your version of iOS is up-to-date your Safari is up-to-date

Got it, looked on (dread) google. If I have iOS 11.3 installed, it means Safari 11. Hmm, wonder why they told me i need Safari 7? Thx anyway, I’ll investigate. It’s a 501-c-3.