User experience not as rich as Mobile Web App Typically, Responsive Web Design supports top to bottom navigation. Content is pushed from top to bottom when users switch from their desktop to mobile device to access the website. This approach is useful for informational sites such as corporate sites, blog sites and news sites. However, for many other industries such as sports, entertainment and retail, mobile users (especially those with touch screen devices) are comfortable scrolling from left to right, especially when viewing pictures in a carousel photo and video gallery. Left to right navigation is supported by Responsive Web Design but requires some customization in the layout and code, which again leads to more time and effort. Designing a website using Responsive Web Design takes longer than building a normal website (a dynamically generated web page which recalls various bits of information from a database and puts them together in a pre-defined format to present the reader with a coherent page). If the website is already built using the normal website approach, rebuilding it using Responsive Web Design in order to optimize across mobile devices will further add to the complexity.<