You can block a website or websites in Google Chrome.
To block a website in Google Chrome just follow the steps below.
From within the BlockSite settings page of Google Chrome, click "Block Sites" atop the menu on the left, then manually type in the websites to be blocked on the bar to the right.
Then after that go to the website you wish to block and click the red BlockSite shield, then hit "Block this site" in the popup window.
That's all there is too it and the website should no longer be reachable after blocking the website in Google Chrome.
You can also go into your internet routers settings and go to the security settings and block a website or websites in the router.
Go into your security settings and there should be an option called block sites and then enter the sites domain you want to block and save the settings.
Then the website should no longer be reachable from your internet connection.