Responsive Web Design

Responsive web design is an approach that advocates for design and development to adapt to the user's actions and surroundings, such as screen size, platform, and orientation. It involves using a combination of flexible grids, layouts, images, and CSS media queries. For instance, when a user switches from a laptop to a mobile device or a tablet, the website should adjust automatically to suit the resolution, image size, and scripting capabilities of the device. 

Responsive web design tools empower developers and designers to build sites that effortlessly adjust to diverse screen sizes, browsers, and devices. These tools offer functionalities across several stages: prototyping & wireframing with flexible layout grids, coding & development with frameworks and pre-built components, testing & optimization with device emulators and performance analysis, and collaboration & handoff through design management platforms. In essence, they streamline the process of creating single websites that deliver optimal user experiences across the entire digital landscape.