CSS Worksheet: Practice Test

HTML and CSS lesson 20: CSS test · Set 240 · 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.⚖️ Two rules with the same selector set a colour. Which one wins? (a) the first one (b) neither (c) the later one (d) the shorter one
2. 2.🌈 What is the biggest number one colour can have in rgb()? (a) 100 (b) 1000 (c) 99 (d) 255
3. 3.⚖️ What colour is the text of this element?
   <h1 class="box" id="top">Hi</h1>
   CSS:
   h1 { color: yellow; }
   h1 { color: white; } (a) yellow (b) purple (c) white (d) orange
4. 4.🧩 Which language gives the page structure? (a) CSS (b) HTML (c) JavaScript
5. 5.⚖️ What colour is the text of this element?
   <h1 class="menu" id="hero">Hi</h1>
   CSS:
   h1 { color: green; }
   h1 { color: blue; } (a) blue (b) purple (c) red (d) green
6. 6.🌈 In #rrggbb, which colour do the first two digits give? (a) black (b) red (c) green (d) blue
7. 7.🌈 Which colour is rgb(0, 0, 255)? (a) cyan (b) bright green (c) magenta (d) blue
8. 8.🌈 In #240000 the red part is the hex number 24. What is it as a normal number?
9. 9.What does background-color do? (a) picks the font style (b) sets the letter colour (c) makes the text bold (d) colours behind the text
10. 10.✍️ CSS declarations go inside which brackets? (a) ( ) (b) < > (c) [ ] (d) { }
11. 11.🎯 Can many elements share the same class? (a) Yes (b) No
12. 12.⚖️ What colour is the text of this element?
    <p class="note" id="end">Hi</p>
    CSS:
    p { color: orange; }
    p { color: purple; } (a) green (b) orange (c) purple (d) yellow
13. 13.⚖️ What colour is the text of this element?
    <h1 class="red" id="main">Hi</h1>
    CSS:
    h1 { color: black; }
    h1 { color: purple; } (a) yellow (b) orange (c) black (d) purple
14. 14.⚖️ What colour is the text of this element?
    <p class="big" id="main">Hi</p>
    CSS:
    p { color: red; }
    .big { color: white; }
    #main { color: purple; } (a) black (b) red (c) white (d) purple
15. 15.🎯 Which element does the selector span style? (a) <span class="note"> (b) <p> (c) <h2 id="main"> (d) <h1 class="note">
16. 16.✍️ How does a CSS comment start? (a) # (b) // (c) <!-- (d) /*
17. 17.🎯 Which element does the selector .big style? (a) <h2 class="box"> (b) <h1 class="big"> (c) <h1 id="big"> (d) <h1 class="red">
18. 18.✍️ Which sign ends each CSS declaration? (a) : (b) ; (c) , (d) .
19. 19.🎯 Which CSS selector matches this element?
    <div class="menu" id="logo">Hello</div> (a) .menu (b) .note (c) span (d) #menu
20. 20.📱 Responsive design means a page ___. (a) fits every screen (b) is only for laptops (c) never changes (d) has no pictures
21. 21.📱 The screen is 700px wide. What font-size (px) does the paragraph get?
    p {
      font-size: 12px;
    }
    @media (max-width: 768px) {
      p {
        font-size: 8px;
      }
    }
22. 22.🌈 Which colour is rgb(255, 0, 0)? (a) white (b) cyan (c) red (d) black
23. 23.⚖️ What colour is the text of this element?
    <p class="box" id="hero">Hi</p>
    CSS:
    p { color: purple; }
    #hero { color: red; }
    .box { color: green; } (a) green (b) red (c) white (d) purple
24. 24.What does justify-content: center do? (a) packs boxes at the end (b) packs boxes at the start (c) puts boxes in the middle (d) equal gaps, none at ends
25. 25.🧩 Which language changes the text size? (a) JavaScript (b) CSS (c) HTML
26. 26.✍️ How many declarations (property: value pairs) are in this rule?
    h2 {
      font-size: 20px;
    }
27. 27.🌈 Which colour of light is strongest in rgb(38, 222, 16)? (a) red (b) blue (c) green
28. 28.📱 The screen is 1100px wide. What font-size (px) does the paragraph get?
    p {
      font-size: 24px;
    }
    @media (min-width: 480px) {
      p {
        font-size: 28px;
      }
    }
29. 29.📱 The screen is 540px wide. Does the rule inside @media apply?
    p {
      font-size: 12px;
    }
    @media (min-width: 768px) {
      p {
        font-size: 16px;
      }
    } (a) Yes (b) No
30. 30.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
31. 31.🖌️ How big is the text, in px?
    li {
      text-align: center;
      color: blue;
      font-size: 36px;
      background-color: orange;
    }
32. 32.🧩 Which language puts a picture on a page? (a) HTML (b) CSS (c) JavaScript
33. 33.🔍 Which is the odd one out? (a) shows a pop-up message (b) changes the page live (c) gives the page structure (d) checks a quiz answer
34. 34.✍️ In color: blue; which part is the value? (a) : (b) ; (c) color (d) blue
35. 35.📱 The screen is 820px wide. Does the rule inside @media apply?
    p {
      font-size: 12px;
    }
    @media (max-width: 768px) {
      p {
        font-size: 8px;
      }
    } (a) No (b) Yes
36. 36.📱 max-width: 600px applies when the screen is ___. (a) 600px or narrower (b) turned off (c) 600px or wider (d) exactly 1000px
37. 37.True or false: #end is an id selector. (a) False (b) True
38. 38.✍️ How many declarations (property: value pairs) are in this rule?
    h1 {
      padding: 8px;
      font-size: 20px;
      margin: 10px;
      font-style: italic;
    }
39. 39.📱 min-width: 800px applies when the screen is ___. (a) 800px or wider (b) exactly 100px (c) turned off (d) 800px or narrower
40. 40.📦 In the box model, which part is space outside the border? (a) content (b) margin (c) border (d) padding

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