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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 786 · 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) No (b) Yes
  2. 2.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
  3. 3.True or false: #main is an id selector. (a) False (b) True
  4. 4.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
  5. 5.🎯 Which element does the selector .box style? (a) <li id="box"> (b) <div class="menu"> (c) <li class="star"> (d) <li class="box">
  6. 6.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
  7. 7.True or false: img is a class selector. (a) False (b) True
  8. 8.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="menu"> (c) <h2 class="menu"> (d) <span id="main">
  9. 9.True or false: #hero is a class selector. (a) False (b) True
  10. 10.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <h1> (c) <p class="star"> (d) <li id="logo">
  11. 11.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
  12. 12.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2>     (a) h2 (b) #main (c) #menu (d) .intro
  13. 13.True or false: p is an element selector. (a) True (b) False
  14. 14.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p>     (a) .big (b) h1 (c) .main (d) #logo
  15. 15.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
  16. 16.🎯 Which element does the selector li style? (a) <div> (b) <p id="main"> (c) <li class="red"> (d) <span class="red">
  17. 17.True or false: #end is an id selector. (a) False (b) True
  18. 18.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
  19. 19.🎯 Which element does the selector .menu style? (a) <h1 class="menu"> (b) <h2 class="big"> (c) <h1 class="note"> (d) <h1 id="menu">
  20. 20.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li>     (a) #note (b) div (c) #intro (d) .intro
  21. 21.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
  22. 22.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
  23. 23.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1>     (a) .top (b) #intro (c) #menu (d) #top
  24. 24.True or false: .star is an element selector. (a) True (b) False
  25. 25.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li>     (a) #hero (b) #end (c) .end (d) .box
  26. 26.🎯 Which element does the selector .red style? (a) <p class="red"> (b) <h1 class="star"> (c) <p id="red"> (d) <p class="box">
  27. 27.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
  28. 28.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
  29. 29.True or false: h1 is a class selector. (a) False (b) True
  30. 30.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2>     (a) #top (b) h2 (c) #note (d) .big
  31. 31.True or false: .card is an element selector. (a) True (b) False
  32. 32.🎯 Which element does the selector li style? (a) <div> (b) <p id="logo"> (c) <span class="menu"> (d) <li class="menu">
  33. 33.🎯 Which element does the selector h1 style? (a) <div id="end"> (b) <li class="box"> (c) <h1 class="box"> (d) <h2>
  34. 34.🎯 Which element does the selector .note style? (a) <h1 class="note"> (b) <h2 class="red"> (c) <h1 id="note"> (d) <h1 class="big">
  35. 35.True or false: body is an element selector. (a) False (b) True
  36. 36.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <h2 class="note"> (c) <h1> (d) <p class="note">
  37. 37.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
  38. 38.🎯 Which element does the selector .note style? (a) <p id="note"> (b) <p class="note"> (c) <p class="big"> (d) <h1 class="red">
  39. 39.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
  40. 40.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector

Answer key

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

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