There are many many websites which are running all over world via Internet. These sites are run by different Web Servers (Web server can refer to either the hardware (the computer) or the software (the computer application) that helps to deliver content that can be accessed through the Internet). Sometimes these Web servers are down, or made down, yes they are made down by some script kiddies or any other using Dos or D-Dos. So, if a server is made down then all webpages/websites hosted on that server are also get down.
