Duration and timing curves in Tailwind - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding Tailwind's transition duration utility

Which Tailwind class sets the transition duration to 500 milliseconds?

A duration-5

B duration-50

C duration-500

D duration-1500

💡 Hint

Look for the class that matches the number of milliseconds directly.

The class duration-500 sets the transition duration to 500ms. Other options represent different durations.

📝 Syntax

intermediate

Correct Tailwind timing function class for ease-in-out

Which Tailwind class applies the ease-in-out timing function to a transition?

A ease-in-out

B ease-in

C ease-out

D ease-linear

💡 Hint

The class name matches the timing function name exactly.

The class ease-in-out applies the ease-in-out timing function, which starts slow, speeds up, then slows down.

❓ rendering

advanced

Visual effect of different timing curves

You have two buttons with the same transition duration but different timing functions: one uses ease-linear and the other uses ease-in. What difference will you see when hovering over them?

Tailwind

<button class="transition duration-700 ease-linear bg-blue-500 hover:bg-blue-700 text-white px-4 py-2 rounded">Linear</button>
<button class="transition duration-700 ease-in bg-green-500 hover:bg-green-700 text-white px-4 py-2 rounded">Ease-In</button>

A Both buttons change color at the same speed throughout the transition.

B Both buttons start slow and speed up at the end.

C The ease-in button changes color at a constant speed; the linear button starts slow and speeds up.

D The linear button changes color at a constant speed; the ease-in button starts slow and speeds up.

💡 Hint

Think about how linear and ease-in timing functions affect speed over time.

The ease-linear timing function changes properties at a constant speed. The ease-in timing function starts slow and then speeds up during the transition.

❓ selector

advanced

Choosing the correct Tailwind class for a 1 second transition with ease-out

Which Tailwind class combination correctly applies a 1 second transition duration with an ease-out timing curve?

A transition duration-1000 ease-out

B transition duration-100 ease-out

C transition duration-100 ease-in-out

D transition duration-1000 ease-in

💡 Hint

Duration is in milliseconds; 1 second equals 1000 milliseconds.

The class duration-1000 sets the duration to 1000ms (1 second), and ease-out applies the correct timing curve.

❓ accessibility

expert

Ensuring accessible transition timing for users with motion sensitivity

You want to respect users who prefer reduced motion in their system settings. Which Tailwind approach correctly disables transitions for these users?

Tailwind

<button class="transition duration-500 ease-in-out hover:bg-red-500">Click me</button>

A Add <code>motion-safe:duration-0</code> to the button's class list.

B Add <code>motion-reduce:transition-none</code> to the button's class list.

C Add <code>motion-safe:transition-none</code> to the button's class list.

D Add <code>motion-reduce:duration-0</code> to the button's class list.

💡 Hint

Think about the media query that targets users who want reduced motion.

The motion-reduce prefix applies styles when the user prefers reduced motion. Setting transition-none disables transitions for these users, improving accessibility.

Practice

1. What does the Tailwind class duration-700 control in an animation?

easy

A. The color of the animated element

B. The size of the animated element

C. The delay before the animation starts

D. The length of time the animation takes to complete

Solution

1. Step 1: Understand the purpose of duration classes

   In Tailwind, duration classes like duration-700 set how long an animation runs in milliseconds.

2. Step 2: Identify what duration-700 means

   The number 700 means 700 milliseconds, so the animation takes 0.7 seconds to finish.

3. Final Answer:

   The length of time the animation takes to complete -> Option D

4. Quick Check:

   Duration controls animation time = B [OK]

Hint: Duration classes set animation time in ms, like duration-700 means 700ms [OK]

Common Mistakes:

• Confusing duration with delay
• Thinking duration changes color or size
• Mixing duration with timing curve

2. Which Tailwind class correctly applies an ease-in-out timing curve to an animation?

easy

A. ease-in-out

B. duration-in-out

C. timing-ease-in-out

D. animate-ease-in-out

Solution

1. Step 1: Recall Tailwind timing curve class names

   Tailwind uses simple class names like ease-in, ease-out, and ease-in-out to set timing curves.

2. Step 2: Identify the correct class for ease-in-out

   The correct class is exactly ease-in-out. Other options are invalid or do not exist.

3. Final Answer:

   ease-in-out -> Option A

4. Quick Check:

   Timing curve class = ease-in-out = D [OK]

Hint: Timing curves use ease-in, ease-out, ease-in-out exactly [OK]

Common Mistakes:

• Adding extra prefixes like duration- or timing-
• Using animate- prefix incorrectly
• Confusing timing curve with duration

3. What will be the total animation time for an element with classes duration-300 ease-linear?

medium

A. 500 milliseconds with an ease-in speed

B. 300 milliseconds with a constant speed

C. 300 seconds with a slow start

D. No animation because ease-linear is invalid

Solution

1. Step 1: Understand duration-300 meaning

   The class duration-300 sets the animation length to 300 milliseconds (0.3 seconds).

2. Step 2: Understand ease-linear timing curve

   ease-linear means the animation speed is constant from start to end, no acceleration or slowing.

3. Final Answer:

   300 milliseconds with a constant speed -> Option B

4. Quick Check:

   duration-300 + ease-linear = 300ms constant speed [OK]

Hint: Duration sets time, ease-linear means steady speed [OK]

Common Mistakes:

• Confusing milliseconds with seconds
• Thinking ease-linear means slow start
• Believing ease-linear is invalid

4. You wrote class="duration-500 ease-inout" but the animation speed is not smooth. What is the error?

medium

A. The class should be ease-in-out with dashes

B. Duration must be in seconds, not milliseconds

C. You need to add animate- prefix to the class

D. The class ease-inout is correct and the problem is elsewhere

Solution

1. Step 1: Check the timing curve class spelling

   The correct Tailwind class for this timing curve is ease-in-out with dashes between words.

2. Step 2: Understand why ease-inout fails

   Without dashes, Tailwind does not recognize the class, so no timing curve is applied, causing animation issues.

3. Final Answer:

   The class should be ease-in-out with dashes -> Option A

4. Quick Check:

   Correct timing curve class = ease-in-out [OK]

Hint: Timing curve classes need exact dashes, like ease-in-out [OK]

Common Mistakes:

• Missing dashes in timing curve class
• Using wrong units for duration
• Adding unnecessary prefixes

5. You want an animation that starts slowly, speeds up, then slows down again over 1 second. Which Tailwind classes should you use?

hard

A. duration-1000 ease-in

B. duration-100 ease-linear

C. duration-1000 ease-in-out

D. duration-500 ease-out

Solution

1. Step 1: Identify the needed animation duration

   The animation should last 1 second, so duration-1000 (1000 milliseconds) is correct.

2. Step 2: Choose the timing curve for slow start and end

   ease-in-out timing curve starts slow, speeds up in the middle, then slows down at the end, matching the requirement.

3. Final Answer:

   duration-1000 ease-in-out -> Option C

4. Quick Check:

   1s duration + ease-in-out curve = A [OK]

Hint: Use duration-1000 with ease-in-out for slow start and end [OK]

Common Mistakes:

• Choosing too short duration
• Using ease-linear which is constant speed
• Using only ease-in or ease-out which don't slow both ends