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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 796 · 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: li is an id selector. (a) True (b) False
  2. 2.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
  3. 3.True or false: #end is an id selector. (a) True (b) False
  4. 4.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
  5. 5.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1>     (a) .logo (b) #box (c) #logo (d) .star
  6. 6.True or false: body is an id selector. (a) True (b) False
  7. 7.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
  8. 8.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p>     (a) #main (b) #star (c) .menu (d) p
  9. 9.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
  10. 10.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
  11. 11.🎯 Which sign starts an id selector? (a) # (b) @ (c) . (d) &
  12. 12.True or false: h1 is a class selector. (a) True (b) False
  13. 13.🎯 Which element does the selector .big style? (a) <h2 id="big"> (b) <li class="box"> (c) <h2 class="red"> (d) <h2 class="big">
  14. 14.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p>     (a) .red (b) h1 (c) .box (d) .main
  15. 15.True or false: body is a class selector. (a) True (b) False
  16. 16.True or false: .star is an element selector. (a) True (b) False
  17. 17.🎯 Can many elements share the same class? (a) No (b) Yes
  18. 18.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div>     (a) #box (b) .logo (c) .star (d) .box
  19. 19.🎯 Which element does the selector #hero style? (a) <li id="hero"> (b) <li id="top"> (c) <div class="menu"> (d) <li class="hero">
  20. 20.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
  21. 21.True or false: body is an element selector. (a) True (b) False
  22. 22.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="red"> (c) <h2 class="red"> (d) <span id="hero">
  23. 23.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2>     (a) .logo (b) .box (c) #logo (d) li
  24. 24.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
  25. 25.🎯 Which element does the selector .red style? (a) <p class="red"> (b) <p class="box"> (c) <p id="red"> (d) <h1 class="star">
  26. 26.True or false: .big is an element selector. (a) True (b) False
  27. 27.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="top"> (c) <h2 class="box"> (d) <div class="box">
  28. 28.True or false: img is an element selector. (a) True (b) False
  29. 29.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
  30. 30.🎯 Which element does the selector .star style? (a) <li class="menu"> (b) <li id="star"> (c) <div class="note"> (d) <li class="star">
  31. 31.🎯 Which element does the selector .note style? (a) <div id="note"> (b) <span class="red"> (c) <div class="big"> (d) <div class="note">
  32. 32.True or false: .menu is a class selector. (a) True (b) False
  33. 33.🎯 Which element does the selector #logo style? (a) <span class="logo"> (b) <span id="end"> (c) <p class="red"> (d) <span id="logo">
  34. 34.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
  35. 35.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span>     (a) #intro (b) .top (c) #star (d) #top
  36. 36.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h2> (c) <div id="hero"> (d) <h1 class="note">
  37. 37.True or false: .big is a class selector. (a) True (b) False
  38. 38.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2>     (a) li (b) .menu (c) #menu (d) .top
  39. 39.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p class="red"> (c) <p class="big"> (d) <p id="big">
  40. 40.True or false: .star is an id selector. (a) False (b) True

Answer key

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

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