Top 5 CSS Interview Questions (with Answers)

1️⃣ What is the CSS Box Model and why is it important? Answer: The CSS Box Model represents how elements are structured and spaced on a page. Every element is a box made up of content, padding, border, and margin. Understanding the box model helps you manage layout, spacing, and design precisely. 2️⃣ What’s the difference between display: none; and visibility: hidden;? Answer: display: none; completely removes the element from the layout flow — no space is taken. visibility: hidden; hides the element but preserves its space on the page. 3️⃣ What are CSS selectors and name 3 common ones? Answer: CSS selectors target HTML elements to apply styles. Common selectors: Element selector (p, h1) Class selector (.container) ID selector (#header) 4️⃣ How does Flexbox help with layout? Answer: Flexbox provides a powerful layout system to align and distribute space among items in a container. It simplifies horizontal & vertical alignment using properties like display: flex, justify-content, and al