Sony Xperia Z3 - just a quick question

[WhereBeThatBlackbirdTo]

I've just got an Xperia to replace my old iphone and, so far, I like it.

However, one small niggle is - how do I go to the top of a page when browsing with Chrome? For example -reading a long MN thread it's sometimes useful to jump up to the top. With an iphone you touch the top of the screen but how is it done on the Xperia?

You can't. Or at least I haven't found a way to do so yet.

Really? Damnit!

Oh well, at least it's not me being spectacularly dim.

Thankyou anyway