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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 122 · 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: .note is an id selector. (a) False (b) True
  2. 2.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2>     (a) .big (b) #note (c) .end (d) #end
  3. 3.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
  4. 4.🎯 Can many elements share the same class? (a) Yes (b) No
  5. 5.🎯 Which element does the selector .star style? (a) <h2 id="star"> (b) <h2 class="menu"> (c) <h2 class="star"> (d) <li class="note">
  6. 6.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
  7. 7.True or false: .card is a class selector. (a) False (b) True
  8. 8.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li>     (a) #top (b) #note (c) .top (d) #intro
  9. 9.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
  10. 10.🎯 Which element does the selector .menu style? (a) <div id="menu"> (b) <div class="menu"> (c) <span class="big"> (d) <div class="note">
  11. 11.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
  12. 12.True or false: body is an id selector. (a) False (b) True
  13. 13.True or false: .menu is a class selector. (a) False (b) True
  14. 14.True or false: .note is a class selector. (a) True (b) False
  15. 15.True or false: .big is an element selector. (a) False (b) True
  16. 16.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span>     (a) #note (b) p (c) .main (d) #main
  17. 17.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2>     (a) #end (b) h2 (c) #star (d) .menu
  18. 18.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
  19. 19.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
  20. 20.🎯 Which element does the selector p style? (a) <h1> (b) <li id="hero"> (c) <p class="note"> (d) <h2 class="note">
  21. 21.🎯 Which element does the selector #end style? (a) <h2 class="end"> (b) <h2 id="hero"> (c) <h2 id="end"> (d) <li class="menu">
  22. 22.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
  23. 23.True or false: p is a class selector. (a) True (b) False
  24. 24.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
  25. 25.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
  26. 26.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1>     (a) h2 (b) #note (c) #main (d) #logo
  27. 27.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span>     (a) #big (b) .red (c) p (d) .big
  28. 28.🎯 Which element does the selector .note style? (a) <span class="red"> (b) <div class="note"> (c) <div class="big"> (d) <div id="note">
  29. 29.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span>     (a) #main (b) span (c) .intro (d) p
  30. 30.🎯 Which CSS selector matches this element?
    <p class="star" id="end">Hello</p>     (a) #hero (b) p (c) .menu (d) #star
  31. 31.🎯 Which element does the selector .big style? (a) <h2 id="big"> (b) <li class="box"> (c) <h2 class="big"> (d) <h2 class="red">
  32. 32.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
  33. 33.True or false: #logo is an element selector. (a) True (b) False
  34. 34.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span>     (a) .menu (b) .star (c) #star (d) p
  35. 35.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span>     (a) #main (b) #logo (c) p (d) #star
  36. 36.🎯 Which element does the selector #hero style? (a) <span id="top"> (b) <span id="hero"> (c) <p class="big"> (d) <span class="hero">
  37. 37.True or false: h1 is an id selector. (a) False (b) True
  38. 38.True or false: #top is an id selector. (a) True (b) False
  39. 39.True or false: body is an element selector. (a) True (b) False
  40. 40.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1

Answer key

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

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