Must have skills for Web developer.

The Unshakeable Trinity (HTML/CSS/JS): Frameworks come and go (React, Vue, Svelte), but the underlying standards remain. Mastery of semantic HTML, the CSS cascade, and vanilla JavaScript is the only future-proof skill set.

Git & Version Control: Coding is a team sport. Knowing how to branch, merge, and resolve conflicts in Git isn't optional—it's the safety net that prevents you from overwriting days of work or breaking production.

The Art of Debugging: You will spend more time fixing code than writing it. Proficiency with browser DevTools—inspecting the DOM, monitoring network requests, and stepping through JS execution—is what separates a senior from a junior.

Responsive Thinking: "Mobile-friendly" is no longer a feature; it's the baseline. Understanding fluid grids, flexbox/grid, and media queries is essential to building interfaces that survive the chaos of thousands of different device screen sizes.