How to block websites using Puffin Browser

[Faolan]

Hi there. I use the Puffin browser and there are some websites I'd like to be able to block. I know on browsers like Firefox you can install an add-on for a blacklist app but I'm only aware of this being doable on laptop and desktop computers and not androids. I don't want to download another web browser but instead get something that will allow me to put sites on a blacklist to prevent me from seeing them.

I'd use Firefox for android but it won't allow me to download and install flash.