Tailwind with React components - Mini Project: Build & Apply

Build a Responsive Card Component with Tailwind CSS and React

📖 Scenario: You are creating a simple card component for a website. This card will show a title, an image, and a short description. You want it to look good on phones and bigger screens using Tailwind CSS inside a React component.

🎯 Goal: Build a React functional component called Card that uses Tailwind CSS classes to style a responsive card with an image, a title, and a description.

📋 What You'll Learn

Create a React functional component named Card

Use Tailwind CSS classes for styling

Include an image with alt text for accessibility

Add a title and a description inside the card

Make the card responsive so it looks good on small and large screens

💡 Why This Matters

🌍 Real World

Cards like this are common on websites to show products, articles, or user profiles in a clean, responsive way.

💼 Career

Knowing how to combine React components with Tailwind CSS is a valuable skill for frontend developers building modern, accessible, and responsive user interfaces.

1

Create the React component structure

Create a React functional component called Card that returns a div with a class max-w-sm mx-auto. Inside this div, add an img tag with src="https://via.placeholder.com/400x200" and alt="Sample image". Below the image, add an h2 tag with the text Card Title and a p tag with the text This is a description of the card.

Tailwind

// Create the Card component with a div, img, h2, and p tags
function Card() {
  return (
    
      {/* Your code here */}
    
  );
}

Hint

Start by writing a function named Card. Inside it, return a div with the class max-w-sm mx-auto. Add the image, title, and description inside this div.

2

Add Tailwind padding and background color

Inside the div with class max-w-sm mx-auto, add Tailwind classes bg-white and p-4 to give the card a white background and padding.

Tailwind

function Card() {
  return (
    
      {/* Add bg-white and p-4 classes here */}
      
      Card Title
      This is a description of the card.
    
  );
}

Hint

Add the classes bg-white and p-4 inside the className attribute of the outer div.

3

Style the text and add rounded corners

Add Tailwind classes text-xl font-bold mb-2 to the h2 tag to make the title bigger and bold with margin below. Add text-gray-700 text-base to the p tag for gray colored normal text. Also, add rounded-lg and mb-4 classes to the img tag to round the corners and add margin below the image.

Tailwind

function Card() {
  return (
    
      {/* Add rounded-lg and mb-4 to img */}
      
      {/* Add text-xl font-bold mb-2 to h2 */}
      Card Title
      {/* Add text-gray-700 text-base to p */}
      This is a description of the card.
    
  );
}

Hint

Use the className attribute to add the Tailwind classes to each element as described.

4

Make the card responsive with shadow and hover effect

Add Tailwind classes shadow-lg and hover:shadow-xl to the outer div to add a shadow and a bigger shadow on hover. Also add transition-shadow duration-300 for smooth shadow change. Finally, add sm:max-w-md to the outer div to make the card wider on small and larger screens.

Tailwind

function Card() {
  return (
    
      {/* Add shadow-lg, hover:shadow-xl, transition-shadow, duration-300, and sm:max-w-md here */}
      
      Card Title
      This is a description of the card.
    
  );
}

Hint

Add all the classes inside the className attribute of the outer div exactly as shown.

Practice

1. What is the main way to add Tailwind styles to a React component?

easy

A. Add Tailwind classes inside a css file only

B. Write styles inside a style tag in the component

C. Use the className attribute with Tailwind utility classes

D. Use inline styles with JavaScript objects

Solution

1. Step 1: Understand React styling

   React uses the className attribute to add CSS classes to elements.

2. Step 2: Apply Tailwind classes

   Tailwind utility classes are added inside className to style components quickly.

3. Final Answer:

   Use the className attribute with Tailwind utility classes -> Option C

4. Quick Check:

   Tailwind + React = className [OK]

Hint: Remember: Tailwind classes go inside className in React [OK]

Common Mistakes:

• Using style attribute instead of className
• Trying to add Tailwind classes in CSS files only
• Using class instead of className in JSX

2. Which of the following is the correct syntax to add Tailwind classes to a React button component?

easy

A. Click me

B. Click me

C. Click me

D. Click me

Solution

1. Step 1: Use JSX syntax for className

   In React JSX, the attribute for CSS classes is className, not class.

2. Step 2: Provide classes as a string

   The value of className must be a string, so it should be inside quotes.

3. Final Answer:

   <button className="bg-blue-500 text-white p-2">Click me</button> -> Option D

4. Quick Check:

   className="..." is correct JSX syntax [OK]

Hint: Use className="..." with quotes for Tailwind classes [OK]

Common Mistakes:

• Using class instead of className
• Not quoting the className value
• Using curly braces without quotes for className string

3. What will be the visual result of this React component?

function Card() {
  return (
    <div className="max-w-sm mx-auto bg-white rounded shadow-lg p-4">
      <h2 className="text-xl font-bold mb-2">Hello</h2>
      <p className="text-gray-700">Welcome to Tailwind!</p>
    </div>
  );
}

medium

A. A red box with large text and no margin

B. A centered white card with rounded corners, shadow, padding, and text styled with bold heading and gray paragraph

C. A full-width blue box with no padding and default text styles

D. An unstyled div with plain text

Solution

1. Step 1: Analyze container styles

   The div uses max-w-sm (small max width), mx-auto (center horizontally), bg-white (white background), rounded (rounded corners), shadow-lg (large shadow), and p-4 (padding).

2. Step 2: Analyze text styles

   The heading has text-xl (large text), font-bold (bold), and mb-2 (margin bottom). The paragraph uses text-gray-700 (medium gray text).

3. Final Answer:

   A centered white card with rounded corners, shadow, padding, and text styled with bold heading and gray paragraph -> Option B

4. Quick Check:

   Tailwind classes produce styled card = A [OK]

Hint: Read each Tailwind class meaning to visualize output [OK]

Common Mistakes:

• Ignoring mx-auto for centering
• Confusing bg-white with colored backgrounds
• Missing padding or shadow effects

4. Identify the error in this React component using Tailwind:

function Button() {
  return <button class="bg-green-500 text-white p-3">Submit</button>;
}

medium

A. Using class instead of className in JSX

B. Missing closing tag for button

C. Tailwind classes are invalid

D. Button text should be inside curly braces

Solution

1. Step 1: Check JSX attribute for CSS classes

   In React JSX, the attribute must be className, not class.

2. Step 2: Verify other syntax

   The button tag is properly closed and Tailwind classes are valid. Text inside button can be plain string.

3. Final Answer:

   Using class instead of className in JSX -> Option A

4. Quick Check:

   JSX requires className, not class [OK]

Hint: Always use className in React JSX for CSS classes [OK]

Common Mistakes:

• Using class instead of className
• Thinking Tailwind classes are invalid
• Adding unnecessary curly braces around text

5. You want a React component with a responsive button that is blue on small screens and green on medium and larger screens using Tailwind. Which is the correct className value?

<button className="?">Click</button>

hard

A. "bg-blue-500 md:bg-green-500 text-white p-2 rounded"

B. "bg-green-500 md:bg-blue-500 text-white p-2 rounded"

C. "bg-blue-500 bg-green-500 md:text-white p-2 rounded"

D. "text-white p-2 rounded bg-blue-500 bg-green-500"

Solution

1. Step 1: Understand Tailwind responsive prefixes

   Tailwind uses prefixes like md: to apply styles at medium screen sizes and above.

2. Step 2: Apply blue background by default and green on medium+

   Use bg-blue-500 for small screens and md:bg-green-500 to override on medium and larger.

3. Step 3: Check other classes

   Text color, padding, and rounding are consistent and correctly placed.

4. Final Answer:

   "bg-blue-500 md:bg-green-500 text-white p-2 rounded" -> Option A

5. Quick Check:

   Responsive prefix md: changes color on medium screens [OK]

Hint: Use md: prefix to change styles on medium screens up [OK]

Common Mistakes:

• Reversing colors for small and medium screens
• Placing classes in wrong order causing override issues
• Using multiple background colors without responsive prefixes