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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 298 · 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: .card is an id selector. (a) True (b) False
  2. 2.True or false: h1 is an element selector. (a) False (b) True
  3. 3.True or false: #top is an id selector. (a) False (b) True
  4. 4.🎯 Which element does the selector #logo style? (a) <h2 id="logo"> (b) <li class="star"> (c) <h2 id="end"> (d) <h2 class="logo">
  5. 5.True or false: p is a class selector. (a) True (b) False
  6. 6.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
  7. 7.🎯 Can many elements share the same class? (a) Yes (b) No
  8. 8.True or false: body is an element selector. (a) True (b) False
  9. 9.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
  10. 10.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
  11. 11.True or false: p is an element selector. (a) False (b) True
  12. 12.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span>     (a) #big (b) p (c) .big (d) .red
  13. 13.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
  14. 14.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1>     (a) h1 (b) #top (c) h2 (d) .menu
  15. 15.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
  16. 16.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div>     (a) #main (b) .box (c) #box (d) .intro
  17. 17.🎯 Which element does the selector #main style? (a) <p class="main"> (b) <h1 class="box"> (c) <p id="logo"> (d) <p id="main">
  18. 18.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
  19. 19.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
  20. 20.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <h1 class="box"> (c) <h2> (d) <li class="box">
  21. 21.True or false: .card is an element selector. (a) True (b) False
  22. 22.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1>     (a) h2 (b) .end (c) .star (d) h1
  23. 23.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
  24. 24.True or false: li is a class selector. (a) True (b) False
  25. 25.True or false: .big is an id selector. (a) True (b) False
  26. 26.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p>     (a) h1 (b) .main (c) .red (d) #main
  27. 27.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <span id="intro"> (c) <p class="menu"> (d) <span class="intro">
  28. 28.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <h1 class="star"> (c) <h2> (d) <div id="top">
  29. 29.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span>     (a) .box (b) #box (c) .logo (d) .star
  30. 30.True or false: li is an element selector. (a) False (b) True
  31. 31.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1>     (a) #logo (b) .menu (c) .note (d) #menu
  32. 32.True or false: #main is a class selector. (a) True (b) False
  33. 33.True or false: .big is a class selector. (a) False (b) True
  34. 34.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
  35. 35.True or false: img is an element selector. (a) True (b) False
  36. 36.🎯 Which element does the selector .red style? (a) <p class="box"> (b) <h1 class="star"> (c) <p class="red"> (d) <p id="red">
  37. 37.True or false: #top is an element selector. (a) False (b) True
  38. 38.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
  39. 39.🎯 Which element does the selector li style? (a) <span class="box"> (b) <div> (c) <p id="hero"> (d) <li class="box">
  40. 40.🎯 Which element does the selector .box style? (a) <span class="box"> (b) <p class="menu"> (c) <span id="box"> (d) <span class="star">

Answer key

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

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