First Tailwind component (Hello World) - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ rendering

intermediate

What will this Tailwind component display?

Look at this simple Tailwind CSS component. What text will appear on the screen when you open it in a browser?

Tailwind

<div class="text-center text-blue-600 font-bold text-lg">Hello World</div>

A A right-aligned blue bold text saying 'Hello World'

B A left-aligned red italic text saying 'Hello World'

C A centered green normal text saying 'Hello World'

D A centered blue bold text saying 'Hello World'

💡 Hint

Check the Tailwind classes for text alignment, color, and font style.

The classes 'text-center' centers the text, 'text-blue-600' colors it blue, 'font-bold' makes it bold, and 'text-lg' sets a large font size.

❓ selector

intermediate

Which Tailwind class centers content horizontally?

You want to center a block element horizontally inside its container using Tailwind CSS. Which class should you use?

A text-center

B items-center

C mx-auto

D justify-center

💡 Hint

Think about margin and block elements.

'mx-auto' sets left and right margins to auto, centering block elements horizontally. 'text-center' centers inline text, 'items-center' and 'justify-center' are for flexbox alignment.

❓ layout

advanced

How does this Tailwind flex container arrange items?

Given this code, how will the three boxes be arranged on a wide screen?

Tailwind

<div class="flex flex-col md:flex-row gap-4">
  <div class="bg-red-400 p-4">Box 1</div>
  <div class="bg-green-400 p-4">Box 2</div>
  <div class="bg-blue-400 p-4">Box 3</div>
</div>

A Always stacked vertically regardless of screen size

B Stacked vertically on small screens, side by side horizontally on medium and larger screens

C Always side by side horizontally regardless of screen size

D Stacked horizontally on small screens, vertically on medium and larger screens

💡 Hint

Look at the responsive prefixes like 'md:' and the flex direction classes.

'flex-col' stacks items vertically by default. 'md:flex-row' changes direction to horizontal on medium screens and up. 'gap-4' adds space between boxes.

❓ accessibility

advanced

Which Tailwind class improves keyboard focus visibility?

You want to make sure a button is clearly visible when focused using keyboard navigation. Which Tailwind class helps with this?

Tailwind

<button class="bg-blue-500 text-white px-4 py-2 rounded">Click me</button>

A focus:ring-4 focus:ring-blue-300

B hover:bg-blue-700

C active:bg-blue-900

D focus:outline-none

💡 Hint

Focus styles should make the element stand out when tabbed to.

'focus:ring-4 focus:ring-blue-300' adds a visible ring around the button on keyboard focus, improving accessibility. 'focus:outline-none' removes focus outline, which is bad for accessibility.

🧠 Conceptual

expert

What is the main benefit of using Tailwind's utility-first approach?

Why do many developers prefer Tailwind CSS's utility-first classes over writing custom CSS styles?

A It allows building designs quickly by composing small reusable classes without writing custom CSS

B It automatically generates CSS animations without any code

C It requires no knowledge of HTML to style components

D It replaces JavaScript functionality with CSS-only solutions

💡 Hint

Think about how Tailwind classes are used to style elements.

Tailwind's utility-first approach provides many small classes that can be combined to build designs fast, reducing the need to write custom CSS. It does not generate animations automatically or replace JavaScript, and HTML knowledge is still needed.