Create a RESPONSIVE NAVBAR with sidebar animation (CSS ONLY)

簡介：

In this video, the creator walks through building a responsive navigation bar with a hamburger menu and a sliding sidebar using only HTML and CSS flexbox. They explain the structure of the HTML markup, how CSS flexbox and media queries enable horizontal and vertical alignment, and how a simple checkbox input paired with the :checked pseudo-class controls the open/close state of the sidebar. Visual assets such as Google Icons are used for the menu and close buttons. The tutorial emphasizes avoiding JavaScript, showing how CSS alone can deliver a dynamic, mobile‑friendly navigation experience.