Responsive Website Design (RWD) is a web design approach aimed at crafting sites to provide an optimal viewing experience, easy reading and navigation with a minimum of resizing, panning, and scrolling across a wide range of devices which are used now a days to view different websites from across the world (devices from mobile phones to desktop monitors)
Check your website at different screen resolutions. Make sure your website is responsive.
This tool has been built to help with testing your responsive websites while you design and build them. You can enter your website's URL into the address bar at the top of this page (not your browser's address bar) to test a specific page.