CSS Worksheet: Practice Test

HTML and CSS lesson 20: CSS test · Set 20 · 40 questions

Code tip (Rule, then maths): Find the topic: syntax, selectors, properties, colours, box model, cascade, flexbox or media queries. Decide which rule or property applies to the element. For sizes, write the sum down: both sides for the box model, free space for flexbox.

1. 1.💪 How much empty space (px) is left after the last box?
   .row {
     display: flex;
     width: 160px;
     justify-content: flex-start;
   }
   Inside are 3 boxes, each 40px wide (no margins).
2. 2.True or false: the border is space inside the border. (a) False (b) True
3. 3.✍️ What is the selector in this CSS rule?
   p {
     background-color: yellow;
     width: 300px;
     margin: 10px;
     font-style: italic;
   } (a) p (b) 300px (c) background-color (d) .note
4. 4.✍️ How many declarations (property: value pairs) are in this rule?
   #top {
     color: red;
     margin: 10px;
     font-weight: bold;
   }
5. 5.🎯 Can many elements share the same class? (a) Yes (b) No
6. 6.Which of these is padding? (a) the line round the box (b) a solid or dotted edge (c) the gap to other boxes (d) the gap round content
7. 7.📦 How much space across (px) does this box take in all, margin included?
   .box {
     width: 230px;
     padding: 10px;
     border: 4px solid black;
     margin: 15px;
   }
8. 8.🎯 Which CSS selector matches this element?
   <div class="note" id="hero">Hello</div> (a) #note (b) #top (c) span (d) #hero
9. 9.🧩 Which language gives the page structure? (a) CSS (b) JavaScript (c) HTML
10. 10.📱 The screen is 320px wide. What font-size (px) does the paragraph get?
    p {
      font-size: 12px;
    }
    @media (max-width: 480px) {
      p {
        font-size: 8px;
      }
    }
11. 11.✍️ What is the selector in this CSS rule?
    .box {
      padding: 8px;
      color: red;
    } (a) h2 (b) .box (c) red (d) padding
12. 12.⚖️ Two rules with the same selector set a colour. Which one wins? (a) the later one (b) the first one (c) the shorter one (d) neither
13. 13.📱 The screen is 414px wide. Does the rule inside @media apply?
    p {
      font-size: 16px;
    }
    @media (max-width: 768px) {
      p {
        font-size: 12px;
      }
    } (a) Yes (b) No
14. 14.💪 Which justify-content value puts boxes in the middle? (a) center (b) flex-end (c) flex-start (d) space-between
15. 15.True or false: padding is space inside the border. (a) True (b) False
16. 16.🌈 Which colour of light is strongest in rgb(177, 4, 123)? (a) blue (b) green (c) red
17. 17.🌈 Hex digits go 0 to 9, then A to which letter? (a) Z (b) J (c) G (d) F
18. 18.✍️ What is the selector in this CSS rule?
    h1 {
      background-color: yellow;
      margin: 10px;
    } (a) background-color (b) h1 (c) p (d) 10px
19. 19.⚖️ What colour is the text of this element?
    <p class="box" id="end">Hi</p>
    CSS:
    p { color: purple; }
    p { color: red; } (a) orange (b) purple (c) green (d) red
20. 20.🧩 Which language makes a link? (a) CSS (b) JavaScript (c) HTML
21. 21.✍️ How many declarations (property: value pairs) are in this rule?
    h2 {
      text-align: center;
      color: red;
      font-size: 20px;
      font-weight: bold;
    }
22. 22.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
23. 23.🌈 Which colour of light is strongest in rgb(83, 136, 182)? (a) blue (b) red (c) green
24. 24.⚖️ What colour is the text of this element?
    <h1 class="big" id="intro">Hi</h1>
    CSS:
    .big { color: purple; }
    h1 { color: yellow; } (a) black (b) yellow (c) blue (d) purple
25. 25.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 310px;
      justify-content: flex-end;
    }
    Inside are 4 boxes, each 60px wide (no margins).
26. 26.What does background-color do? (a) makes the text bold (b) colours behind the text (c) makes letters bigger (d) centres a heading
27. 27.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
28. 28.🧩 Which language adds space around boxes? (a) HTML (b) JavaScript (c) CSS
29. 29.🖌️ How big is the text, in px?
    h2 {
      text-align: center;
      background-color: red;
      font-size: 12px;
      color: white;
    }
30. 30.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
31. 31.✍️ In color: blue; which part is the property? (a) ; (b) blue (c) : (d) color
32. 32.📦 How wide (px) is this box from the outer edge of its left border to the outer edge of its right border?
    .box {
      width: 70px;
      padding: 15px;
      border: 1px solid black;
      margin: 10px;
    }
33. 33.True or false: p is a class selector. (a) True (b) False
34. 34.🎨 Which attribute adds CSS inside one tag? (a) alt (b) style (c) href (d) src
35. 35.✍️ Which sign goes between a property and its value? (a) ; (b) - (c) = (d) :
36. 36.✍️ What value is given to background-color in this rule?
    body {
      background-color: yellow;
      font-style: italic;
    } (a) 8px (b) 10px (c) background-color (d) yellow
37. 37.✍️ How many declarations (property: value pairs) are in this rule?
    p {
      border: 2px solid;
      font-size: 20px;
      padding: 8px;
      font-weight: bold;
    }
38. 38.What does font-size do? (a) centres a heading (b) makes letters bigger (c) sets the letter colour (d) makes the text bold
39. 39.📦 How much space top to bottom (px) does this box take in all, margin included?
    .box {
      height: 190px;
      padding: 10px;
      border: 4px solid black;
      margin: 0px;
    }
40. 40.🖌️ Where does the text sit on its line?
    li {
      text-align: right;
      background-color: purple;
      font-size: 28px;
      color: black;
    } (a) on the left (b) in the middle (c) on the right

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