Justify content in CSS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to center the items horizontally using flexbox.

CSS

.container {
  display: flex;
  justify-content: [1];
}

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

Atop

Bleft

Cbottom

Dcenter

Attempts:

3 left

💡 Hint

Common Mistakes

Using values like 'left' or 'top' which are not valid for justify-content.

Forgetting to set display to flex.

The justify-content property with value center centers flex items horizontally inside the container.

2fill in blank

medium

Complete the code to space items evenly with equal space around them.

CSS

.container {
  display: flex;
  justify-content: [1];
}

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

Aspace-around

Bspace-between

Cspace-evenly

Dstretch

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing space-between which does not add space at the edges.

Using stretch which is not a valid justify-content value.

The value space-around adds equal space around each item, including the edges.

3fill in blank

hard

Fix the error in the code to align items to the end horizontally.

CSS

.container {
  display: flex;
  justify-content: [1];
}

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

Aright

Bflex-end

Cend

Dbottom

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'right' which is not a valid justify-content value.

Confusing justify-content with align-items.

The correct value to align flex items to the end is flex-end. Values like right or end are invalid here.

4fill in blank

hard

Fill both blanks to create a flex container that spaces items evenly and wraps them.

CSS

.container {
  display: [1];
  justify-content: [2];
  flex-wrap: wrap;
}

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

Aflex

Bspace-evenly

Cblock

Dspace-between

Attempts:

3 left

💡 Hint

Common Mistakes

Using block instead of flex for display.

Choosing space-between which does not add equal space around items.

Setting display to flex enables flexbox. Using space-evenly for justify-content spaces items evenly with equal space around them.

5fill in blank

hard

Fill all three blanks to create a flex container that centers items horizontally, aligns them at the start vertically, and does not wrap.

CSS

.container {
  display: [1];
  justify-content: [2];
  align-items: [3];
  flex-wrap: nowrap;
}

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

Ablock

Bcenter

Cflex-start

Dflex

Attempts:

3 left

💡 Hint

Common Mistakes

Using block for display which disables flexbox.

Confusing justify-content and align-items values.

Set display to flex to enable flexbox. Use center for justify-content to center items horizontally. Use flex-start for align-items to align items at the top vertically.

Practice

1. What does the CSS property justify-content control in a flex container?

easy

A. The vertical alignment of items inside the container

B. The horizontal alignment of items inside the container

C. The size of the container

D. The color of the items

Solution

1. Step 1: Understand the role of justify-content

   This property controls how items are aligned horizontally inside a flex or grid container.

2. Step 2: Differentiate from vertical alignment

   Vertical alignment is controlled by align-items, not justify-content.

3. Final Answer:

   The horizontal alignment of items inside the container -> Option B

4. Quick Check:

   Justify content = horizontal alignment [OK]

Hint: Justify content aligns items left to right [OK]

Common Mistakes:

• Confusing justify-content with align-items
• Thinking it changes item size
• Assuming it controls colors

2. Which of the following is the correct syntax to center items horizontally using justify-content in a flex container?

easy

A. justify-content: center-items;

B. justify-content: middle;

C. justify-content: align-center;

D. justify-content: center;

Solution

1. Step 1: Recall valid values for justify-content

   Common valid values include flex-start, center, space-between, and space-around.

2. Step 2: Identify the correct syntax for centering

   The correct value to center items horizontally is center, so the syntax is justify-content: center;.

3. Final Answer:

   justify-content: center; -> Option D

4. Quick Check:

   Centering uses 'center' value [OK]

Hint: Use 'center' exactly to center items [OK]

Common Mistakes:

• Using invalid values like 'middle' or 'align-center'
• Missing the colon or semicolon
• Confusing with align-items syntax

3. Given this CSS and HTML, what will be the horizontal spacing of the items inside the container?

div.container {
  display: flex;
  justify-content: space-between;
  width: 300px;
}

<div class="container">
  <div>Item 1</div>
  <div>Item 2</div>
  <div>Item 3</div>
</div>

medium

A. Items are grouped together on the left

B. Items are centered with equal space around them

C. Items are evenly spaced with equal space between them

D. Items are aligned to the right

Solution

1. Step 1: Understand justify-content: space-between;

   This value places the first item at the start, the last item at the end, and evenly distributes space between the items.

2. Step 2: Visualize the layout

   With three items, the spaces between them are equal, but no extra space is added at the container edges.

3. Final Answer:

   Items are evenly spaced with equal space between them -> Option C

4. Quick Check:

   Space-between = equal gaps between items [OK]

Hint: Space-between puts equal gaps only between items [OK]

Common Mistakes:

• Thinking space-between adds space around edges
• Confusing with space-around or center
• Assuming items cluster on one side

4. Identify the error in this CSS code that prevents justify-content from working:

div.container {
  display: block;
  justify-content: center;
}

medium

A. The container must have display: flex; or display: grid; for justify-content to work

B. The property name should be justify-items instead

C. The value 'center' is invalid for justify-content

D. The container needs a fixed width

Solution

1. Step 1: Check the display property

   justify-content only works on flex or grid containers, but here display is set to block.

2. Step 2: Understand the requirement for flex/grid

   Without display: flex; or display: grid;, justify-content has no effect.

3. Final Answer:

   The container must have display: flex; or display: grid; for justify-content to work -> Option A

4. Quick Check:

   Justify-content needs flex or grid [OK]

Hint: Use flex or grid display for justify-content to work [OK]

Common Mistakes:

• Using justify-content on block containers
• Confusing justify-content with justify-items
• Thinking value 'center' is invalid

5. You want to create a navigation bar with 4 links spaced evenly across the width, but with equal space around each link (including edges). Which justify-content value should you use in your flex container?

hard

A. space-around

B. flex-start

C. center

D. space-between

Solution

1. Step 1: Understand the difference between space-between and space-around

   space-between puts equal space only between items, no space at edges. space-around adds equal space around each item, including edges.

2. Step 2: Match requirement to property value

   Since the requirement is equal space around each link including edges, space-around is the correct choice.

3. Final Answer:

   space-around -> Option A

4. Quick Check:

   Space-around = equal space around all items [OK]

Hint: Use space-around for equal space including edges [OK]

Common Mistakes:

• Choosing space-between which skips edges
• Using center which groups items
• Using flex-start which aligns left only