A web page that is delivered to internet users exactly the same way as it is stored in the servers is known as flat page or static web pages. It is one of the most simplest and low maintenance websites that any business can easily showcase. It is very easy to setup and design, but making changes to such websites needs an expert with excellent programming knowledge.
To chanage into dynamic content and pictures is Dynamic Website.Dynamic website has control panel which is password protected and where you can manage your website by changing its content and manages menus,photos, and formating also.
Responsive Web Design is about using HTML and CSS to automatically resize, hide, shrink, or enlarge, a website, to make it look good on all devices (desktops, tablets, and phones):