Font size and scaling in Tailwind - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding Tailwind's font size scale

Which Tailwind CSS class sets the font size to approximately 1.25rem (20px) by default?

A text-xl

B text-lg

C text-base

D text-sm

💡 Hint

Tailwind uses a scale where text-base is 1rem, and sizes increase or decrease from there.

The text-xl class sets the font size to 1.25rem (20px) by default. text-lg is 1.125rem (18px).

📝 Syntax

intermediate

Correct Tailwind syntax for responsive font size

Which option correctly applies a font size of 1rem on small screens and 1.25rem on medium screens using Tailwind CSS?

A text-base md:text-xl

B text-base text-md

C text-base-md text-xl

D text-md md:text-base

💡 Hint

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

Option A uses the correct breakpoint prefix md: to change font size from text-base (1rem) to text-xl (1.25rem) at medium screens.

Other options either use invalid class names or incorrect breakpoint usage.

❓ rendering

advanced

Visual effect of font size scaling with rem units

If the root font size is set to 16px, what will be the computed font size in pixels for an element with class text-2xl in Tailwind CSS?

A 20px

B 24px

C 32px

D 18px

💡 Hint

Tailwind's text-2xl corresponds to 1.5rem by default.

Since 1rem equals 16px, 1.5rem equals 24px. Tailwind's text-2xl sets font size to 1.5rem, so the computed size is 24px.

❓ selector

advanced

Selecting font size with Tailwind's arbitrary values

Which Tailwind class correctly sets the font size to exactly 22px using arbitrary values?

A text-22

B font-size-22

C text-22px

D text-[22px]

💡 Hint

Tailwind allows arbitrary values inside square brackets for many utilities.

Option D uses the correct syntax for arbitrary values: text-[22px].

Other options are invalid Tailwind class names.

❓ accessibility

expert

Ensuring accessible font scaling with Tailwind

Which approach best supports user accessibility preferences for font scaling in Tailwind CSS?

A Disable browser zoom to keep font sizes fixed

B Use only fixed pixel font sizes for consistency

C Use relative font sizes like rem and avoid fixed pixel sizes

D Use inline styles with px units for font size

💡 Hint

Accessibility means respecting user settings and allowing text to scale properly.

Using relative units like rem allows font sizes to scale with user preferences and browser settings, improving accessibility.

Fixed pixel sizes or disabling zoom harm accessibility.

Practice

1. Which Tailwind class sets the font size to extra small?

easy

A. text-xs

B. text-lg

C. text-3xl

D. text-base

Solution

1. Step 1: Understand Tailwind font size naming

   Tailwind uses text-xs for extra small font size.

2. Step 2: Match the class to the size

   Among the options, only text-xs means extra small.

3. Final Answer:

   text-xs -> Option A

4. Quick Check:

   Extra small font = text-xs [OK]

Hint: Extra small font always uses text-xs in Tailwind [OK]

Common Mistakes:

• Confusing text-xs with text-base or text-lg
• Thinking text-3xl is small instead of large
• Assuming text-base is the smallest size

2. Which of these is the correct Tailwind class to make text very large, close to the largest size?

easy

A. text-2xl

B. text-sm

C. text-9xl

D. text-base

Solution

1. Step 1: Recall Tailwind font size scale

   Tailwind font sizes go up to text-9xl for very large text.

2. Step 2: Identify the largest size option

   Among the options, text-9xl is the largest size available.

3. Final Answer:

   text-9xl -> Option C

4. Quick Check:

   Largest font size = text-9xl [OK]

Hint: Largest font size in Tailwind is text-9xl [OK]

Common Mistakes:

• Choosing text-2xl thinking it's the largest
• Confusing text-sm as large
• Using text-base which is default size

3. What font size will the following HTML render with Tailwind?

<p class="text-lg">Hello</p>

medium

A. Large font size

B. Small font size

C. Medium font size

D. Extra large font size

Solution

1. Step 1: Understand the class text-lg

   The class text-lg in Tailwind means large font size, bigger than base.

2. Step 2: Match the size description

   Among the options, "Large font size" best matches text-lg.

3. Final Answer:

   Large font size -> Option A

4. Quick Check:

   text-lg = Large font size [OK]

Hint: text-lg means large font size in Tailwind [OK]

Common Mistakes:

• Thinking text-lg is medium or small
• Confusing text-lg with text-xl or text-base
• Ignoring the class and guessing default size

4. You want to make text smaller on mobile but larger on desktop using Tailwind. Which class combination is correct?

<p class="?">Responsive Text</p>

medium

A. text-lg sm:text-sm

B. text-sm md:text-lg

C. text-base lg:text-xs

D. text-xl md:text-xs

Solution

1. Step 1: Understand Tailwind responsive prefixes

   Tailwind uses prefixes like md: to apply styles on medium screens and up.

2. Step 2: Choose smaller text by default and larger on medium screens

   text-sm md:text-lg means small text on mobile and large text on medium+ screens.

3. Final Answer:

   text-sm md:text-lg -> Option B

4. Quick Check:

   Mobile small, desktop large = text-sm md:text-lg [OK]

Hint: Use mobile first: small text, then md: larger text [OK]

Common Mistakes:

• Reversing sizes for mobile and desktop
• Using wrong breakpoint prefixes
• Not using responsive prefixes at all

5. You want a heading that scales smoothly from small on mobile to very large on desktop using Tailwind. Which class set achieves this best?

<h1 class="?">Scaling Heading</h1>

hard

A. text-3xl md:text-5xl lg:text-6xl

B. text-lg sm:text-xl md:text-2xl

C. text-xs sm:text-base md:text-lg

D. text-sm md:text-4xl lg:text-7xl

Solution

1. Step 1: Identify scaling from small to very large

   We want text starting small on mobile, then bigger on medium, and very large on large screens.

2. Step 2: Check each option's size progression

   text-sm md:text-4xl lg:text-7xl scales from text-sm (small), to text-4xl (large), to text-7xl (very large), matching the requirement.

3. Final Answer:

   text-sm md:text-4xl lg:text-7xl -> Option D

4. Quick Check:

   Small to very large scaling = text-sm md:text-4xl lg:text-7xl [OK]

Hint: Use increasing sizes with responsive prefixes for smooth scaling [OK]

Common Mistakes:

• Choosing options with small max sizes
• Not increasing size enough on larger screens
• Using sizes that start too large on mobile