Answer:
Responsive Web Design
Step-by-step explanation:
Responsive web design is an approach to web design that makes web pages render well on a variety of devices and window.
Responsive Web design also suggests that design and development should respond to the user’s behavior and environment based on screen size, platform and orientation.
Responsive Web Design use HTML and CSS to automatically resize, hide, shrink, or enlarge a website to make it look good on all devices example smartphone and tablets through the use of the coding technique .
Responsive design is also the idea that your website should display equally well in everything from widescreen monitors to mobile phones.