How to Build a Chat UI from Scratch Using Only CSS and JavaScript
A tutorial published on DEV Community demonstrates how to build a fully functional chat interface without relying on any framework or component library. The guide covers core visual elements such as message bubble styling, sent-versus-received alignment, and consecutive message grouping to create a polished conversational feel. It also details a CSS-only animated typing indicator that uses transform and opacity animations to avoid triggering page reflows. Accessibility is addressed through semantic HTML and an aria-live attribute on the message log, ensuring screen readers announce new messages without interrupting users. Smart auto-scrolling logic is included so incoming messages only snap to the bottom when the user is already near it, preserving their reading position otherwise.
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