Responsive typography in CSS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the base font size using a relative unit for better scaling.

CSS

body {
  font-size: [1];
}

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

A1rem

B20px

C16px

D150%

Attempts:

3 left

💡 Hint

Common Mistakes

Using fixed pixel sizes like 16px limits responsiveness.

Using percentages without context can be confusing.

Using 1rem sets the font size relative to the root element, which helps with responsive scaling.

2fill in blank

medium

Complete the media query to increase font size on screens wider than 600px.

CSS

@media (min-width: 600px) {
  body {
    font-size: [1];
  }
}

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

A100%

B1rem

C14px

D1.25rem

Attempts:

3 left

💡 Hint

Common Mistakes

Using smaller font sizes inside media queries defeats the purpose.

Using fixed pixel sizes can reduce flexibility.

Increasing font size to 1.25rem on larger screens improves readability.

3fill in blank

hard

Fix the error in the CSS to make the heading font size responsive using clamp().

CSS

h1 {
  font-size: clamp([1], 5vw, 3rem);
}

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

A2rem

B1rem

C16px

D10vw

Attempts:

3 left

💡 Hint

Common Mistakes

Using viewport width units as minimum size can make text too small.

Using pixel units inside clamp() is valid but less flexible than rem.

The minimum font size should be a reasonable size like 2rem to ensure readability on small screens.

4fill in blank

hard

Fill both blanks to create a responsive paragraph font size that scales between 1rem and 1.5rem.

CSS

p {
  font-size: clamp([1], 2vw, [2]);
}

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

A1rem

B1.25rem

C1.5rem

D2rem

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping minimum and maximum values.

Using fixed pixel sizes instead of relative units.

The font size will never go below 1rem or above 1.5rem, scaling smoothly with viewport width.

5fill in blank

hard

Fill all three blanks to create a CSS rule that sets the root font size responsively using clamp().

CSS

:root {
  font-size: clamp([1], [2], [3]);
}

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

A14px

B1vw

C18px

D16px

Attempts:

3 left

💡 Hint

Common Mistakes

Using viewport units for min or max values.

Mixing units inconsistently.

This sets the root font size to never go below 14px, scale with viewport width at 1vw, and never exceed 18px.

Practice

1. What is the main purpose of responsive typography in web design?

easy

A. To adjust text size automatically for different screen sizes

B. To change text color based on user preference

C. To add animations to text on hover

D. To fix text size regardless of device

Solution

1. Step 1: Understand responsive typography concept

   Responsive typography means text size changes to fit different screen sizes for better readability.

2. Step 2: Match purpose with options

   Only To adjust text size automatically for different screen sizes describes adjusting text size automatically for different devices.

3. Final Answer:

   To adjust text size automatically for different screen sizes -> Option A

4. Quick Check:

   Responsive typography = automatic text size adjustment [OK]

Hint: Responsive typography means text size changes with screen size [OK]

Common Mistakes:

• Confusing color or animation with typography
• Thinking text size stays fixed on all devices
• Mixing responsive typography with layout changes

2. Which CSS function is commonly used to create flexible font sizes that adapt between a minimum and maximum value?

easy

A. clamp()

B. minmax()

C. var()

D. calc()

Solution

1. Step 1: Identify CSS functions for font sizing

   calc() does math, var() accesses variables, minmax() is for grids, clamp() sets min, preferred, max values.

2. Step 2: Match function to flexible font size

   clamp() allows font size to grow between min and max limits responsively.

3. Final Answer:

   clamp() -> Option A

4. Quick Check:

   Flexible font size uses clamp() [OK]

Hint: clamp() sets min, preferred, max font sizes [OK]

Common Mistakes:

• Using calc() alone for responsive font size
• Confusing var() with sizing function
• Thinking minmax() works for font sizes

3. What will be the font size on a 600px wide screen for this CSS rule?

font-size: clamp(1rem, 2vw, 2rem);

medium

A. 2rem

B. 12px

C. Approximately 1.2rem

D. 1rem

Solution

1. Step 1: Calculate 2vw on 600px screen

   2vw = 2% of 600px = 12px. Assuming 1rem = 16px, 12px ≈ 0.75rem.

2. Step 2: Apply clamp function

   clamp(1rem, 0.75rem, 2rem) returns 1rem because the preferred value (0.75rem) is less than the minimum (1rem).

3. Final Answer:

   1rem -> Option D

4. Quick Check:

   clamp(min, preferred, max) returns min if preferred < min [OK]

Hint: Calculate vw in px, compare with clamp min and max [OK]

Common Mistakes:

• Ignoring clamp min and max limits
• Confusing vw units with rem
• Assuming clamp always picks preferred value

4. Identify the error in this CSS for responsive typography:

@media (max-width: 600px) { font-size: 2vw; }

medium

A. 2vw is not a valid unit

B. Using max-width instead of min-width

C. Missing selector before font-size property

D. Media query syntax is incorrect

Solution

1. Step 1: Check media query syntax

   The media query syntax is correct with @media (max-width: 600px).

2. Step 2: Check CSS inside media query

   font-size property must be inside a selector block, but here it is alone without a selector.

3. Final Answer:

   Missing selector before font-size property -> Option C

4. Quick Check:

   CSS properties need selectors inside media queries [OK]

Hint: Always include selector inside media queries [OK]

Common Mistakes:

• Writing properties directly inside media query without selector
• Confusing max-width and min-width usage
• Thinking 2vw is invalid unit

5. You want a heading's font size to be at least 1.5rem, scale with viewport width, but never exceed 3rem. Which CSS rule achieves this best?

hard

A. font-size: calc(1.5rem + 5vw);

B. font-size: clamp(1.5rem, 5vw, 3rem);

C. font-size: min(3rem, 5vw);

D. font-size: max(1.5rem, 3rem);

Solution

1. Step 1: Understand clamp() usage

   clamp(min, preferred, max) sets font size between min and max, scaling with preferred value.

2. Step 2: Analyze options

   font-size: clamp(1.5rem, 5vw, 3rem); uses clamp with min 1.5rem, preferred 5vw (viewport width), max 3rem, exactly matching requirements.

3. Step 3: Check other options

   calc() adds values but no max limit; min() and max() alone don't combine min, preferred, max properly.

4. Final Answer:

   font-size: clamp(1.5rem, 5vw, 3rem); -> Option B

5. Quick Check:

   Clamp sets min, preferred, max font sizes [OK]

Hint: Use clamp(min, preferred, max) for responsive font size limits [OK]

Common Mistakes:

• Using calc() without max limit
• Confusing min() and max() functions
• Not setting minimum font size