Divide utilities between children in Tailwind - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to apply a flex container to the parent div.

Tailwind

<div class="[1]">
  <div>Child 1</div>
  <div>Child 2</div>
</div>

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

Agrid

Binline

Cflex

Dblock

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'block' or 'inline' does not create a flex container.

Using 'grid' changes layout but is not flexbox.

Using flex on the parent makes its children arrange in a row by default.

2fill in blank

medium

Complete the code to evenly space children horizontally inside the flex container.

Tailwind

<div class="flex [1]">
  <div>Child 1</div>
  <div>Child 2</div>
  <div>Child 3</div>
</div>

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

Ajustify-start

Bjustify-end

Cjustify-center

Djustify-between

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'justify-center' centers children but does not space them evenly.

Using 'justify-start' aligns children to the left with no space.

justify-between places equal space between children horizontally.

3fill in blank

hard

Fix the error in the code to make children stack vertically with space between them.

Tailwind

<div class="flex flex-col [1]">
  <div>Child 1</div>
  <div>Child 2</div>
  <div>Child 3</div>
</div>

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

Aspace-y-4

Bgap-x-4

Cspace-x-4

Dgap-4

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'space-x-4' adds horizontal space which won't show in vertical layout.

Using 'gap-x-4' only adds horizontal gaps, not vertical.

When children are stacked vertically (flex-col), use space-y-4 to add vertical space between them.

4fill in blank

hard

Fill both blanks to create a grid container with 3 columns and gap between items.

Tailwind

<div class="grid [1] [2]">
  <div>Child 1</div>
  <div>Child 2</div>
  <div>Child 3</div>
  <div>Child 4</div>
</div>

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

Agrid-cols-3

Bgap-4

Cgap-x-4

Dgrid-rows-3

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'grid-rows-3' creates rows instead of columns.

Using 'gap-x-4' adds horizontal gap only, missing vertical spacing.

grid-cols-3 sets 3 columns, and gap-4 adds space between all grid items.

5fill in blank

hard

Fill all three blanks to create a flex container that wraps children, centers them, and adds horizontal gap.

Tailwind

<div class="flex [1] [2] [3]">
  <div>Child 1</div>
  <div>Child 2</div>
  <div>Child 3</div>
  <div>Child 4</div>
</div>

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

Aflex-wrap

Bjustify-center

Cgap-x-6

Ditems-start

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'items-start' aligns children vertically at top but does not center horizontally.

Using 'gap-4' adds gap in both directions, but question asks for horizontal gap only.

flex-wrap allows children to wrap to next line, justify-center centers them horizontally, and gap-x-6 adds horizontal space between children.

Practice

1. What does the Tailwind utility space-x-4 do when applied to a parent container with multiple child elements?

easy

A. It adds horizontal spacing of 1rem between each child element.

B. It adds vertical spacing of 1rem between each child element.

C. It adds padding of 1rem inside each child element.

D. It centers all child elements horizontally.

Solution

1. Step 1: Understand the space-x-4 utility

   This utility adds horizontal space (margin) between direct child elements of a flex container.

2. Step 2: Recognize the spacing size

   The number 4 corresponds to 1rem (16px by default) spacing between children horizontally.

3. Final Answer:

   It adds horizontal spacing of 1rem between each child element. -> Option A

4. Quick Check:

   space-x-4 = horizontal gap 1rem [OK]

Hint: Remember: space-x adds horizontal gaps between children [OK]

Common Mistakes:

• Confusing space-x with vertical spacing (space-y)
• Thinking it adds padding inside children
• Assuming it centers children

2. Which Tailwind utility correctly applies a different background color only to the first child element inside a parent container?

easy

A. child-1:bg-blue-500

B. first:bg-blue-500

C. bg-blue-500:first

D. parent:first-child:bg-blue-500

Solution

1. Step 1: Identify the correct pseudo-class utility

   Tailwind uses first: prefix to target the first child element.

2. Step 2: Confirm syntax correctness

   first:bg-blue-500 applies background color blue-500 only to the first child.

3. Final Answer:

   first:bg-blue-500 -> Option B

4. Quick Check:

   first: prefix targets first child [OK]

Hint: Use first: prefix to style only the first child [OK]

Common Mistakes:

• Using invalid utility names like child-1
• Placing pseudo-class after the utility
• Trying to style parent with child selectors

3. Given this HTML and Tailwind CSS:

<div class="flex space-x-6">
  <div class="p-4 bg-red-300">Box 1</div>
  <div class="p-4 bg-green-300">Box 2</div>
  <div class="p-4 bg-blue-300">Box 3</div>
</div>

What will be the horizontal space between Box 1 and Box 2?

medium

A. No space, boxes touch each other

B. 1rem (16px)

C. 2rem (32px)

D. 1.5rem (24px)

Solution

1. Step 1: Understand the space-x-6 utility

   This utility adds horizontal margin of size 6 between child elements in a flex container.

2. Step 2: Know the spacing scale

   In Tailwind, 6 corresponds to 1.5rem or 24px spacing.

3. Final Answer:

   1.5rem (24px) -> Option D

4. Quick Check:

   space-x-6 = 1.5rem horizontal gap [OK]

Hint: Tailwind spacing 6 = 1.5rem gap between children [OK]

Common Mistakes:

• Confusing spacing scale numbers with px values
• Assuming space-x adds padding inside children
• Ignoring that space-x only works on flex or grid parents

4. You want to add vertical spacing between child elements but accidentally use space-x-4 on a column flex container. What is the problem?

medium

A. No vertical spacing appears because space-x adds horizontal gaps only.

B. It causes a syntax error and the page breaks.

C. It adds vertical spacing but also breaks layout.

D. It adds horizontal spacing and vertical spacing both.

Solution

1. Step 1: Understand flex direction and space utilities

   In a column flex container, children stack vertically. space-x-4 adds horizontal gaps, which have no effect here.

2. Step 2: Identify correct utility for vertical spacing

   To add vertical spacing, space-y-4 should be used instead.

3. Final Answer:

   No vertical spacing appears because space-x adds horizontal gaps only. -> Option A

4. Quick Check:

   space-x only adds horizontal gaps [OK]

Hint: Use space-y for vertical gaps, space-x for horizontal [OK]

Common Mistakes:

• Expecting space-x to add vertical spacing
• Thinking it causes syntax errors
• Using space-x on non-flex containers

5. You want to style a list where the first child has a red border, the last child has a green border, and all other children have a blue border using Tailwind. Which combination of utilities correctly achieves this?

hard

A. first:border-red-500 last:border-green-500 border-blue-500

B. border-blue-500 first:border-red-500 last:border-green-500 !important

C. border-blue-500 first:border-red-500 last:border-green-500

D. border-blue-500 first-child:border-red-500 last-child:border-green-500

Solution

1. Step 1: Understand Tailwind's order of utility application

   Tailwind applies utilities in order. Base border color should come first, then overrides with first: and last:.

2. Step 2: Check syntax correctness

   first:border-red-500 and last:border-green-500 are correct pseudo-class prefixes. The base border-blue-500 applies to all children.

3. Step 3: Identify incorrect options

   first:border-red-500 last:border-green-500 border-blue-500 applies base border last, which overrides first/last styles. border-blue-500 first:border-red-500 last:border-green-500 !important uses invalid !important. border-blue-500 first-child:border-red-500 last-child:border-green-500 uses invalid selectors.

4. Final Answer:

   border-blue-500 first:border-red-500 last:border-green-500 -> Option C

5. Quick Check:

   Base first, then first:/last: overrides [OK]

Hint: Apply base styles first, then use first:/last: to override [OK]

Common Mistakes:

• Placing base border after first/last overrides
• Using invalid selectors like first-child:
• Trying to use !important in Tailwind classes