CSS Quiz Test Online (30 random Questions) 2026

Take this CSS Quiz Test Online and challenge your knowledge with 30 carefully crafted questions. Whether you’re a beginner or an experienced developer, this quiz will help you assess your understanding of CSS fundamentals, styling techniques, selectors, properties, layouts, and advanced concepts.

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30 Minutes CSS Quiz Test Online

Test your CSS knowledge with this 30-minute quiz! Covering fundamental to advanced concepts, this quiz features 30 multiple-choice questions that will challenge your understanding of selectors, properties, layout techniques, animations, and responsive design. Perfect for interview preparation and skill enhancement.

1 / 30

1. What is the purpose of the color media feature?

A) It targets devices with specific screen resolutions

B) It targets devices with specific aspect ratios

C) It targets devices with specific screen widths

D) It targets devices with specific color capabilities

2 / 30

2. What does the place-content property do in Grid?

A) It aligns individual grid items along the column axis

B) It sets the size of grid columns and rows

C) It combines the properties justify-content and align-content in one declaration

D) It controls the placement of a grid item within its grid area

3 / 30

3. Which CSS property is commonly used to apply responsive design principles?

A) width: 100%;

B) position: absolute;

C) display: flex;

D) float: left;

4 / 30

4. Which CSS3 feature is used to apply a shadow effect to elements?

A) border-shadow

B) text-shadow

C) box-shadow

D) element-shadow

5 / 30

5. Which CSS selector targets only the first occurrence of an element?

A) :first-of-type

B) :first-child

C) :first

D) :first-element

6 / 30

6. Which property in Grid is used to set the size of a column or row?

A) grid-size

B) row-height

C) grid-template-columns / grid-template-rows

D) column-width

7 / 30

7. What is the specificity of the following selector: div.container #content p.highlight span?

A) 121

B) 111

C) 123

D) 1003

8 / 30

8. Which CSS3 feature is used to apply rounded corners to elements?

A) border-radius

B) opacity

C) text-shadow

D) box-shadow

9 / 30

9. How can you override inline styles with CSS?

A) Use inline styles with higher specificity

B) Increase the specificity of the CSS rule

C) Use the !important declaration

D) Use JavaScript to remove inline styles

10 / 30

10. Which CSS technique is commonly used to hide elements on smaller screens in responsive design?

A) display: none;

B) position: absolute;

C) opacity: 0;

D) visibility: hidden;

11 / 30

11. What is the specificity of the following CSS rule: #header .nav li.active?

A) 121

B) 1100

C) 111

D) 112

12 / 30

12. Which CSS3 property is used to create shadow effects around an element?

A) element-effect

B) element-shadow

C) box-shadow

D) shadow-effect

13 / 30

13. In Flexbox, what is the purpose of the flex-shrink property?

A) To determine how much a flex item can grow

B) To determine how much a flex item can shrink

C) To set the initial size of a flex item

D) To align flex items along the cross-axis

14 / 30

14. What does specificity determine in CSS?

A) The uniqueness of a selector

B) The strength of a selector's style rules

C) The order of application of styles

D) The importance of styles

15 / 30

15. What does the flexbox layout model in CSS3 offer?

A) Advanced text formatting options

B) A more efficient way to lay out, align, and distribute space among items in a container

C) Improved support for media queries

D) A way to create grid-based layouts

16 / 30

16. Which CSS selector has the highest specificity?

A) Class selector

B) ID selector

C) Universal selector

D) Tag selector

17 / 30

17. What CSS property is used to create a grid container?

A) display: grid;

B) display: flex;

C) display: block;

D) display: inline;

18 / 30

18. Which CSS property is used to specify the color of the text?

A) color

B) text-color

C) text-style

D) font-color

19 / 30

19. In Flexbox, what is the default value of the flex-direction property?

A) row

B) column

C) column-reverse

D) row-reverse

20 / 30

20. What is the specificity value of the following selector: div#content .paragraph?

A) 101

B) 110

C) 100

D) 111

21 / 30

21. Which CSS property is used to specify the viewport width in a media query?

A) screen-width

B) viewport-width

C) device-width

D) window-width

22 / 30

22. Which of the following media query syntaxes is incorrect?

A) @media (min-height: 600px), (max-height: 800px) { ... }

B) @media (min-width: 768px) and (max-width: 1024px) { ... }

C) @media (min-device-width: 320px) and (max-device-width: 480px) { ... }

D) @media (orientation: portrait), (orientation: landscape) { ... }

23 / 30

23. Which of the following selectors has the least specificity?

A) Element selectors

B) Universal selectors

C) Class selectors

D) ID selectors

24 / 30

24. Which CSS property is used to create a shadow effect for text?

A) text-effect

B) shadow

C) text-shadow

D) box-shadow

25 / 30

25. What is the specificity value of the selector: body p#content?

A) 100

B) 102

C) 101

D) 010

26 / 30

26. Which vendor prefix is used for Google Chrome?

A) -ms-

B) -webkit-

C) -o-

D) -moz-

27 / 30

27. Which CSS property is commonly used to create a responsive navigation menu?

A) position: absolute;

B) display: flex;

C) float: left;

D) text-align: center;

28 / 30

28. What is the specificity of the following selector: body .container #content?

A) 110

B) 100

C) 101

D) 111

29 / 30

29. Why is cross-browser compatibility important in CSS development?

A) To reduce the size of CSS files

B) To make web pages load faster

C) To ensure consistent rendering of web pages across different browsers

D) To enhance security features of web pages

30 / 30

30. Why are vendor prefixes discouraged for production code?

A) They increase the size of CSS files

B) They are not recognized by any browsers

C) They slow down the rendering of web pages

D) They may cause compatibility issues with future browser versions

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