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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 968 · 40 questions
TalentJR

Code tip (Dot for class, hash for id): p matches every <p>; .note matches class="note"; #top matches id="top". A dot means class, a hash means id — mixing them up matches nothing. Many elements can share a class; an id belongs to only one element.

NameDateTime takenScore ___ / 40
  1. 1.True or false: #top is a class selector. (a) True (b) False
  2. 2.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
  3. 3.🎯 Which element does the selector .big style? (a) <span class="red"> (b) <span class="big"> (c) <p class="box"> (d) <span id="big">
  4. 4.🎯 Which CSS selector matches this element?
    <li class="star" id="end">Hello</li>     (a) div (b) .end (c) #star (d) .star
  5. 5.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <span id="intro"> (c) <p class="red"> (d) <span class="intro">
  6. 6.True or false: .note is a class selector. (a) False (b) True
  7. 7.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
  8. 8.🎯 Which element does the selector div style? (a) <p class="star"> (b) <span> (c) <div class="star"> (d) <h1 id="hero">
  9. 9.True or false: .star is a class selector. (a) True (b) False
  10. 10.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
  11. 11.True or false: .menu is an id selector. (a) False (b) True
  12. 12.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
  13. 13.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span>     (a) p (b) span (c) #intro (d) #star
  14. 14.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li>     (a) .red (b) .big (c) .logo (d) div
  15. 15.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1>     (a) h1 (b) .main (c) h2 (d) #logo
  16. 16.🎯 Which element does the selector #top style? (a) <h2 id="intro"> (b) <h2 class="top"> (c) <li class="box"> (d) <h2 id="top">
  17. 17.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
  18. 18.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
  19. 19.True or false: .menu is an element selector. (a) True (b) False
  20. 20.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
  21. 21.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p>     (a) h1 (b) #hero (c) #top (d) #menu
  22. 22.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
  23. 23.🎯 Which element does the selector .menu style? (a) <h1 id="menu"> (b) <h1 class="menu"> (c) <h1 class="note"> (d) <h2 class="big">
  24. 24.True or false: #top is an element selector. (a) False (b) True
  25. 25.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
  26. 26.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
  27. 27.True or false: #top is an id selector. (a) False (b) True
  28. 28.True or false: img is an element selector. (a) False (b) True
  29. 29.True or false: .big is a class selector. (a) True (b) False
  30. 30.🎯 Can many elements share the same class? (a) Yes (b) No
  31. 31.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p>     (a) #main (b) .intro (c) .big (d) h1
  32. 32.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
  33. 33.True or false: .card is a class selector. (a) False (b) True
  34. 34.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p>     (a) #main (b) #logo (c) h1 (d) .main
  35. 35.True or false: li is a class selector. (a) False (b) True
  36. 36.True or false: li is an id selector. (a) False (b) True
  37. 37.True or false: h1 is an element selector. (a) False (b) True
  38. 38.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span>     (a) .note (b) .big (c) p (d) .top
  39. 39.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span>     (a) #main (b) .menu (c) p (d) #logo
  40. 40.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span>     (a) p (b) .intro (c) #star (d) #intro

Answer key

  1. False
  2. .
  3. <span class="big">
  4. .star
  5. <span id="intro">
  6. True
  7. a class selector
  8. <div class="star">
  9. True
  10. #
  11. False
  12. an element selector
  13. span
  14. .big
  15. h1
  16. <h2 id="top">
  17. a class selector
  18. a class selector
  19. False
  20. an id selector
  21. #hero
  22. an element selector
  23. <h1 class="menu">
  24. False
  25. an element selector
  26. an id selector
  27. True
  28. True
  29. True
  30. Yes
  31. .big
  32. an id selector
  33. True
  34. #main
  35. False
  36. False
  37. True
  38. .note
  39. #main
  40. #intro

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