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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 486 · 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: .menu 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 #end style? (a) <p class="end"> (b) <h1 class="red"> (c) <p id="end"> (d) <p id="hero">
  4. 4.🎯 Which element does the selector p style? (a) <h1> (b) <p class="box"> (c) <li id="end"> (d) <h2 class="box">
  5. 5.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
  6. 6.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li>     (a) .intro (b) div (c) #note (d) .note
  7. 7.True or false: li is an id selector. (a) True (b) False
  8. 8.🎯 Which element does the selector div style? (a) <span> (b) <div class="big"> (c) <p class="big"> (d) <h1 id="hero">
  9. 9.🎯 Which element does the selector #intro style? (a) <p class="intro"> (b) <p id="main"> (c) <p id="intro"> (d) <h1 class="note">
  10. 10.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
  11. 11.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1>     (a) .red (b) #end (c) #big (d) .end
  12. 12.True or false: h1 is a class selector. (a) False (b) True
  13. 13.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div>     (a) .note (b) #menu (c) span (d) #top
  14. 14.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
  15. 15.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
  16. 16.🎯 Which element does the selector .red style? (a) <h1 class="red"> (b) <h2 class="star"> (c) <h1 id="red"> (d) <h1 class="box">
  17. 17.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
  18. 18.True or false: h1 is an element selector. (a) False (b) True
  19. 19.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1>     (a) h2 (b) .box (c) #logo (d) .star
  20. 20.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li>     (a) .logo (b) .red (c) #red (d) .box
  21. 21.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2>     (a) h2 (b) .red (c) li (d) #big
  22. 22.True or false: #hero is an element selector. (a) False (b) True
  23. 23.🎯 Which element does the selector #hero style? (a) <li class="star"> (b) <h2 class="hero"> (c) <h2 id="hero"> (d) <h2 id="top">
  24. 24.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
  25. 25.True or false: .note is a class selector. (a) False (b) True
  26. 26.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p>     (a) #logo (b) #main (c) .red (d) .main
  27. 27.True or false: body is a class selector. (a) True (b) False
  28. 28.True or false: .menu is an id selector. (a) True (b) False
  29. 29.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1>     (a) #star (b) #hero (c) .menu (d) .hero
  30. 30.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
  31. 31.🎯 Which element does the selector .big style? (a) <li id="big"> (b) <li class="red"> (c) <div class="box"> (d) <li class="big">
  32. 32.🎯 Can many elements share the same class? (a) No (b) Yes
  33. 33.🎯 Which element does the selector .box style? (a) <h2 id="box"> (b) <h2 class="star"> (c) <li class="menu"> (d) <h2 class="box">
  34. 34.🎯 Which element does the selector .star style? (a) <h2 class="star"> (b) <h2 id="star"> (c) <li class="note"> (d) <h2 class="menu">
  35. 35.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
  36. 36.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li>     (a) div (b) .big (c) #hero (d) .note
  37. 37.True or false: #hero is an id selector. (a) True (b) False
  38. 38.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
  39. 39.🎯 Which element does the selector .star style? (a) <span class="star"> (b) <p class="note"> (c) <span class="menu"> (d) <span id="star">
  40. 40.True or false: p is an element selector. (a) False (b) True

Answer key

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

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