A responsive website responds to its environment and adapts to small, medium, and large screens. Responsive design allows a single version of a website to be optimized across many devices, including desktop, tablet, mobile, and more. Elements re-size and re-position to fit the screen size that the website is being accessed from, so the design and user experience are consistent every time.
Reasoning: This is important because it allows the site to have familiarity with devices. A user on a smartphone will see the same design elements, navigation, and functionality as a user on a PC. Because of this, simplicity in design and layout is very important. This helps ensure the best performance, no matter how the website is being viewed.
Note:
Users still have the control to affect the look and feel without damage to the responsive aspects.
Maintain Site Responsiveness
Re-Size Appropriately: Adhere to size constraints provided by your designer on banners, slide shows, and spotlights
Follow Standards: Maintain set standards for assigned text and colors
Limit Global Navigation Items: Limit global navigation items to six
Use 5 or Fewer Graphic Buttons: Limit horizontal navigational graphic buttons to five
Use Widgets in Place of HTML: Do not use HTML to specify an item's absolute position in page creation
Set Percentages in Width: Use percentages (100%, 50%, 25%) instead of set numbers if you want to add a table or item with an adjustable width
Note: This will allow your content to adjust with the screen size.