Design for the responsive Web is an approach that demonstrates that design and development should respond to user behavior and environment based on screen size, platform and orientation. The application includes the use of flexible grids and layouts, images and CSS media queries in a smart way. As the user moves from the laptop to the iPad, the website will provide the harmony for the resolution, image size and scripting capabilities. In other words, the website user must have the knowledge to respond to the preferences of the user himself. This removes the need for a different design and development phase for every new gadget on the market.
Sensitive themes can follow a responsive internet design approach aimed at creating internet sites that offer the best user experience across screen resolutions, including tablets such as various devices and desktop computers, iPads, smartphones and other mobile devices. A responsive blog post setting properly adjusts the layout based on screen size and resolution.

Sensitive themes provide better legibility and usability on small screens such as smartphones. Otherwise, you will not be able to create a device-specific mobile version. Prior to sensitive themes, sites need to create a different mobile version for each platform like iPhone, Android. The responsive design allows a single site to be viewed on a variety of devices without the need for additional themes or extensions.