Column spanning in Tailwind - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ layout

intermediate

What is the visual layout of this grid with column spanning?

Consider a 3-column grid where the first item spans 2 columns. What will the layout look like?

Tailwind

<div class="grid grid-cols-3 gap-4">
  <div class="col-span-2 bg-blue-500 text-white p-4">Item 1</div>
  <div class="bg-green-500 text-white p-4">Item 2</div>
  <div class="bg-red-500 text-white p-4">Item 3</div>
</div>

A Item 1 takes first two columns in the first row; Item 2 is in the third column of the first row; Item 3 is below Item 1 in the second row, first column.

B Item 1 takes all three columns in the first row; Item 2 and Item 3 are side by side in the second row.

C Item 1 takes first two columns in the first row; Item 2 is below Item 1 in the second row, first column; Item 3 is below Item 2 in the third row, first column.

D Item 1 takes first two columns in the first row; Item 2 is in the third column of the first row; Item 3 is below Item 2 in the second row, third column.

💡 Hint

Remember that grid items fill rows left to right, top to bottom, and spanning columns affects placement of following items.

The first item spans 2 columns in the first row, so it occupies columns 1 and 2. The second item fills the remaining third column in the first row. The third item moves to the next row and occupies the first column there.

❓ selector

intermediate

Which Tailwind class makes an element span 3 columns in a grid?

You want a grid item to cover exactly 3 columns. Which class should you use?

A col-span-full

B col-start-3

C col-end-3

D col-span-3

💡 Hint

The class name for spanning columns starts with 'col-span-' followed by the number of columns to span.

col-span-3 tells the grid item to span 3 columns. col-start-3 and col-end-3 control where the item starts or ends, not how many columns it spans. col-span-full spans all columns, which may not be exactly 3.

🧠 Conceptual

advanced

What happens if a grid item spans more columns than the grid has?

If a grid has 4 columns and an item uses col-span-6, what will happen?

A The item will overflow outside the grid container.

B The item will cause a layout error and not render.

C The item will span all 4 columns, ignoring the extra span.

D The item will automatically wrap to the next row.

💡 Hint

Think about how CSS grid handles spans larger than the grid size.

When a grid item tries to span more columns than exist, it will span all available columns without causing errors or overflow. It does not wrap automatically.

❓ accessibility

advanced

How does column spanning affect keyboard navigation in grids?

If a grid item spans multiple columns, what should you consider for keyboard users?

A Use tabindex="-1" on the spanning item to prevent focus.

B Ensure the item has a clear focus style and logical tab order despite spanning columns.

C Remove the item from tab order because spanning confuses keyboard users.

D Add aria-hidden="true" to the spanning item to skip it in navigation.

💡 Hint

Think about how users navigate with keyboard and how focus moves in grids.

Spanning columns does not remove the need for keyboard accessibility. The item should remain focusable with a visible focus style and the tab order should follow the visual layout logically.

❓ rendering

expert

What is the rendered width of a grid item with col-span-2 in a 4-column grid with 1rem gap?

Given a grid container 40rem wide with 4 equal columns and 1rem gap between columns, what is the width of an item with col-span-2?

A 19.5rem

B 20rem

C 18.5rem

D 21rem

💡 Hint

Calculate total gaps width, subtract from container width, then divide by columns and multiply by span count.

The total gap width is 3 gaps × 1rem = 3rem. The remaining width for columns is 40rem - 3rem = 37rem. Each column is 37rem ÷ 4 = 9.25rem. Spanning 2 columns means 9.25rem × 2 = 18.5rem plus 1 gap (1rem) between the two columns, so total width is 18.5rem + 1rem = 19.5rem.