These tips should help you narrow down any issue you are having accessing a website and determine whether or not it's you or the site.
Are you typing the domain correctly? This may seem obvious, but sometimes it's the smallest mistakes that make the difference!
Try accessing another website. If you can't, most likely the issue has to do with your Internet connection and not the website.
Try using another device or connection. If the website works when you try to access it from your phone or another computer, that's probably a sign something is wrong with your computer.
Check your settings or software. Sometimes you may not be able to access a site because of your browser settings or some software (browser plug-ins or anti-virus) that is blocking the connection.
If none of these tips have helped you, write a comment below outlining your problem with the website so others can help you!