Can not see post on the website

Hi, I made one post and published. But when I visit to website following notification can see.I want to know what is the wrong? "Error 404 - Page Not Found. We’re sorry! This page is not available. THIS MIGHT BE BECAUSE: You have typed the web address incorrectly, or the page you were looking for may have been moved, updated or deleted. PLEASE TRY THE FOLLOWING OPTIONS INSTEAD: Check for a mis-typed URL error, then press the refresh button on your browser or Use the search box at the Header." clarence.maila@gmail.com