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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 86 · 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.🎯 Can many elements share the same class? (a) Yes (b) No
  2. 2.True or false: li is a class selector. (a) True (b) False
  3. 3.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <h1 class="red"> (c) <h2> (d) <li class="red">
  4. 4.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="box"> (c) <h1 class="box"> (d) <div id="main">
  5. 5.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
  6. 6.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p>     (a) #note (b) .big (c) #logo (d) #main
  7. 7.🎯 Which element does the selector #hero style? (a) <h2 class="note"> (b) <h1 class="hero"> (c) <h1 id="hero"> (d) <h1 id="top">
  8. 8.🎯 Which element does the selector .menu style? (a) <p id="menu"> (b) <h1 class="big"> (c) <p class="menu"> (d) <p class="note">
  9. 9.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
  10. 10.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
  11. 11.True or false: p is an element selector. (a) False (b) True
  12. 12.🎯 Which element does the selector #intro style? (a) <div id="main"> (b) <div id="intro"> (c) <div class="intro"> (d) <span class="star">
  13. 13.🎯 Which CSS selector matches this element?
    <li class="box" id="hero">Hello</li>     (a) .hero (b) #top (c) .box (d) .star
  14. 14.True or false: li is an element selector. (a) True (b) False
  15. 15.True or false: .menu is an element selector. (a) True (b) False
  16. 16.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <h1 class="note"> (c) <p class="star"> (d) <p class="menu">
  17. 17.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div>     (a) #hero (b) .end (c) span (d) .note
  18. 18.True or false: body is a class selector. (a) False (b) True
  19. 19.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
  20. 20.🎯 Which element does the selector #end style? (a) <h2 class="box"> (b) <h1 id="end"> (c) <h1 id="hero"> (d) <h1 class="end">
  21. 21.🎯 Which element does the selector .box style? (a) <p id="box"> (b) <h1 class="menu"> (c) <p class="star"> (d) <p class="box">
  22. 22.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div>     (a) .top (b) div (c) #intro (d) .star
  23. 23.🎯 Which element does the selector .star style? (a) <span id="star"> (b) <span class="menu"> (c) <p class="note"> (d) <span class="star">
  24. 24.True or false: #main is a class selector. (a) True (b) False
  25. 25.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li>     (a) #main (b) div (c) #big (d) .main
  26. 26.🎯 Which element does the selector #hero style? (a) <div class="menu"> (b) <li id="hero"> (c) <li id="top"> (d) <li class="hero">
  27. 27.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
  28. 28.True or false: .big is an id selector. (a) False (b) True
  29. 29.True or false: #hero is an id selector. (a) True (b) False
  30. 30.True or false: img is a class selector. (a) True (b) False
  31. 31.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p>     (a) #top (b) #intro (c) h1 (d) #big
  32. 32.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
  33. 33.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <div id="intro"> (c) <h2> (d) <h1 class="note">
  34. 34.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
  35. 35.🎯 Which element does the selector #top style? (a) <h2 class="top"> (b) <li class="note"> (c) <h2 id="intro"> (d) <h2 id="top">
  36. 36.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="hero">Hello</h2>     (a) #menu (b) h2 (c) #top (d) .hero
  37. 37.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2>     (a) li (b) .hero (c) .red (d) #red
  38. 38.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <div class="star"> (c) <li class="box"> (d) <li class="red">
  39. 39.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
  40. 40.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span>     (a) p (b) .menu (c) span (d) .intro

Answer key

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

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