Justify content (main axis) in Tailwind - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ layout

intermediate

What is the visual result of justify-center in Tailwind CSS?

You have a flex container with three boxes inside. The container uses flex and justify-center. Where will the boxes appear horizontally inside the container?

Tailwind

<div class="flex justify-center bg-gray-100 h-24">
  <div class="w-12 h-12 bg-blue-500"></div>
  <div class="w-12 h-12 bg-red-500"></div>
  <div class="w-12 h-12 bg-green-500"></div>
</div>

A The three boxes are grouped together in the center horizontally with equal space on left and right.

B The three boxes are spaced evenly with equal space between each box and edges.

C The three boxes are aligned to the left side with no extra space on the right.

D The three boxes are aligned to the right side with no extra space on the left.

💡 Hint

Think about how justify-content works on the main axis in flexbox.

The justify-center class centers all flex items horizontally inside the container. This means the group of boxes is placed in the middle with equal space on both sides.

❓ layout

intermediate

Which Tailwind class spaces flex items evenly with equal space around each item?

You want to create a flex container where the items have equal space before the first item, between items, and after the last item. Which justify-* class do you use?

Tailwind

<div class="flex justify-??? bg-gray-100 h-24">
  <div class="w-12 h-12 bg-purple-500"></div>
  <div class="w-12 h-12 bg-yellow-500"></div>
  <div class="w-12 h-12 bg-pink-500"></div>
</div>

A justify-around

B justify-between

C justify-center

D justify-start

💡 Hint

Remember, justify-around adds equal space around each item, including edges.

justify-around distributes space evenly around each flex item, so the space before the first item and after the last item is half the space between items, creating equal spacing around all items.

❓ selector

advanced

Which Tailwind class aligns flex items to the end of the main axis?

You want all flex items to be pushed to the right side of a horizontal flex container. Which justify-* class achieves this?

Tailwind

<div class="flex justify-??? bg-gray-100 h-24">
  <div class="w-12 h-12 bg-red-400"></div>
  <div class="w-12 h-12 bg-green-400"></div>
  <div class="w-12 h-12 bg-blue-400"></div>
</div>

A justify-between

B justify-end

C justify-center

D justify-start

💡 Hint

Think about which side is the 'end' in a left-to-right flex container.

justify-end pushes all flex items to the end of the main axis, which is the right side in a horizontal flex container.

🧠 Conceptual

advanced

What happens if you use justify-between with only one flex item?

You have a flex container with a single item inside. The container uses flex and justify-between. How will the single item be positioned horizontally?

Tailwind

<div class="flex justify-between bg-gray-100 h-24">
  <div class="w-12 h-12 bg-indigo-500"></div>
</div>

A The single item is centered horizontally.

B The single item is placed at the end (right) of the container.

C The single item stretches to fill the container width.

D The single item is placed at the start (left) of the container.

💡 Hint

Consider how justify-between distributes space between multiple items.

justify-between places space between items. With only one item, there is no space between, so the item stays at the start (left) by default.

❓ accessibility

expert

How does using justify-center affect keyboard navigation and screen reader users?

You have a flex container with buttons aligned using justify-center. What should you consider to ensure good accessibility?

Tailwind

<nav class="flex justify-center bg-gray-50 p-4" role="navigation" aria-label="Main menu">
  <button class="mx-2">Home</button>
  <button class="mx-2">About</button>
  <button class="mx-2">Contact</button>
</nav>

A Screen readers will ignore buttons because they are centered; keyboard navigation is disabled.

B Keyboard users will be trapped in the center; screen readers will read buttons in visual order only.

C Keyboard users can tab through buttons in order; screen readers read buttons in DOM order regardless of visual alignment.

D Buttons must have extra ARIA roles to be accessible when centered.

💡 Hint

Think about how visual layout affects DOM order and accessibility.

Using justify-center only changes visual alignment. Keyboard navigation and screen readers follow the DOM order, so accessibility is preserved if the DOM order is logical.