Responsive utility overrides in Tailwind - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to make the text color red on small screens.

Tailwind

<div class="text-[1]-500">Hello World</div>

Drag options to blanks, or click blank then click option'

Ablue

Bred

Cgreen

Dyellow

Attempts:

3 left

💡 Hint

Common Mistakes

Using a color name that doesn't exist in Tailwind.

Forgetting the number after the color name.

The class text-red-500 sets the text color to red.

2fill in blank

medium

Complete the code to make the background blue only on medium screens and larger.

Tailwind

<div class="[1]:bg-blue-500">Content</div>

Drag options to blanks, or click blank then click option'

Asm

Bxl

Clg

Dmd

Attempts:

3 left

💡 Hint

Common Mistakes

Using sm: which applies on small screens, not medium.

Forgetting the colon after the prefix.

The prefix md: applies styles starting at medium screen sizes.

3fill in blank

hard

Fix the error in the code to override padding on large screens.

Tailwind

<div class="p-4 [1]:p-8">Box</div>

Drag options to blanks, or click blank then click option'

Alg

Bmd

Csm

Dxl

Attempts:

3 left

💡 Hint

Common Mistakes

Using md: which applies on medium screens, not large.

Using sm: which is too small to override large screen styles.

The lg: prefix applies styles starting at large screen sizes, overriding smaller sizes.

4fill in blank

hard

Fill both blanks to make the text green on small screens and blue on medium screens.

Tailwind

<p class="[1]:text-green-500 [2]:text-blue-500">Colors</p>

Drag options to blanks, or click blank then click option'

Asm

Bmd

Clg

Dxl

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the prefixes so colors apply incorrectly.

Using lg: or xl: which are too large for this task.

sm: applies styles on small screens, md: applies on medium screens and overrides small.

5fill in blank

hard

Fill all four blanks to set margin 2 on default, margin 4 on medium, and margin 6 on large screens.

Tailwind

<div class="m-[1] [2]:m-[3] [4]:m-6">Box</div>

Drag options to blanks, or click blank then click option'

A2

Bmd

C4

Dlg

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up margin sizes and prefixes.

Forgetting to add the prefix colon.

Default margin is m-2. md:m-4 applies margin 4 on medium screens. lg:m-6 applies margin 6 on large screens.

Practice

1. What does the md:bg-red-500 class do in Tailwind CSS?

easy

A. It applies a red background only on medium screens and larger.

B. It applies a red background on all screen sizes.

C. It applies a red background only on small screens.

D. It applies a red background only on large screens.

Solution

1. Step 1: Understand the prefix md:

   The md: prefix in Tailwind means the style applies starting from medium screen sizes (usually 768px and up).

2. Step 2: Apply the utility with the prefix

   The utility bg-red-500 sets the background color to red. With md:, it only applies on medium and larger screens.

3. Final Answer:

   It applies a red background only on medium screens and larger. -> Option A

4. Quick Check:

   Prefix md: = medium and up [OK]

Hint: Remember prefixes apply styles from that screen size up [OK]

Common Mistakes:

• Thinking md: applies on all screen sizes
• Confusing md: with sm: or lg:
• Assuming it applies only on medium screens, not larger

2. Which of the following is the correct way to apply a blue text color only on large screens using Tailwind?

easy

A. text-blue-500 lg:

B. text-lg-blue-500

C. lg:text-blue-500

D. blue-lg-text-500

Solution

1. Step 1: Identify the correct prefix syntax

   In Tailwind, responsive prefixes come before the utility, separated by a colon, e.g., lg:.

2. Step 2: Combine prefix with utility

   The correct format is lg:text-blue-500 to apply blue text on large screens and up.

3. Final Answer:

   lg:text-blue-500 -> Option C

4. Quick Check:

   Prefix + utility = lg:text-blue-500 [OK]

Hint: Prefix always goes before utility with a colon [OK]

Common Mistakes:

• Placing prefix after the utility
• Combining prefix and utility without colon
• Using incorrect order or spelling

3. Given this HTML snippet:

<div class="bg-green-200 md:bg-yellow-300 lg:bg-red-400">Box</div>

What background color will the box have on a screen width of 800px?

medium

A. Green (bg-green-200)

B. Yellow (md:bg-yellow-300)

C. Red (lg:bg-red-400)

D. No background color

Solution

1. Step 1: Determine screen size category for 800px

   800px is between medium (768px) and large (1024px) screen sizes.

2. Step 2: Check which background color applies

   Base bg-green-200 applies always. md:bg-yellow-300 overrides from 768px up. lg:bg-red-400 applies from 1024px up, so not yet active.

3. Final Answer:

   Yellow (md:bg-yellow-300) -> Option B

4. Quick Check:

   800px = medium range, so md: styles apply [OK]

Hint: Check screen width against prefix breakpoints [OK]

Common Mistakes:

• Choosing base color ignoring overrides
• Assuming large styles apply before 1024px
• Confusing order of overrides

4. Identify the error in this Tailwind class usage:

<div class="sm:bg-blue-200 md:bg-green-300 sm:bg-red-400">Content</div>

medium

A. No error, this is valid Tailwind syntax

B. Missing colon after md

C. Incorrect color names used

D. Duplicate sm: prefixes with conflicting colors

Solution

1. Step 1: Look for repeated prefixes

   The class list has two sm: prefixed background colors: sm:bg-blue-200 and sm:bg-red-400.

2. Step 2: Understand conflict in overrides

   Both apply at small screen sizes, but only one can take effect. The last one sm:bg-red-400 will override the first, making the first redundant or confusing.

3. Final Answer:

   Duplicate sm: prefixes with conflicting colors -> Option D

4. Quick Check:

   Duplicate prefixes cause override conflicts [OK]

Hint: Avoid repeating same prefix with different utilities [OK]

Common Mistakes:

• Ignoring duplicate prefixes
• Thinking multiple same prefixes combine
• Assuming missing colon error

5. You want a button that is green on small screens, yellow on medium, and red on large screens. Which Tailwind class list achieves this correctly?

hard

A. bg-green-500 md:bg-yellow-500 lg:bg-red-500

B. bg-green-500 lg:bg-yellow-500 md:bg-red-500

C. md:bg-green-500 bg-yellow-500 lg:bg-red-500

D. lg:bg-green-500 md:bg-yellow-500 bg-red-500

Solution

1. Step 1: Assign base color for smallest screens

   Base utility without prefix applies to all screens by default, so bg-green-500 sets green on small screens.

2. Step 2: Override colors for medium and large screens

   md:bg-yellow-500 applies yellow from medium screens up, and lg:bg-red-500 applies red from large screens up, overriding previous colors.

3. Step 3: Check order and prefixes

   The order and prefixes in bg-green-500 md:bg-yellow-500 lg:bg-red-500 correctly apply colors in increasing screen sizes.

4. Final Answer:

   bg-green-500 md:bg-yellow-500 lg:bg-red-500 -> Option A

5. Quick Check:

   Base + md: + lg: overrides = correct responsive colors [OK]

Hint: Base style first, then ascending prefixes for overrides [OK]

Common Mistakes:

• Mixing prefix order incorrectly
• Placing larger screen prefixes before smaller
• Not setting base style for smallest screens