A website is nowadays accessed from a no. of devices and platforms - iPhones, iPads, android phones, tablets, desktops and laptops. Moreover, these devices have varying screen sizes. A website could be viewed on a 320 px wide mobile phone or a giant desktop screen of 2400 px. Most website owners want that their website looks and feels the same irrespective of the device or screen size on which it is viewed. Creating separate websites for different devices and screen sizes is expensive and it poses an added expense most organizations would prefer to avoid. This is where Responsive Web Design comes in.
Responsive web design changes the appearance of a website dynamically, depending on the screen size of the device being used. Thus, with Responsive Web Design the website displays optimally on whatever device it is being viewed. This makes viewing your website from any smartphone, tablet, or computer seamless.