You can easily block a website on Firefox — but you'll need to download the Block Site extension first.
Lifewire on MSN
The Easy Way to Block Ads in Safari
There is a built-in tool, but Safari extensions are better This article explains how to block ads in Safari on iPhones using content blockers. Your phone must have iOS 9 or higher to use content ...
You can block websites on Google Chrome using an extension called BlockSite or in Settings.
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