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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 609 · 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.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
  2. 2.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
  3. 3.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span>     (a) #main (b) p (c) .menu (d) #menu
  4. 4.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span>     (a) span (b) #star (c) .hero (d) #top
  5. 5.🎯 Can many elements share the same class? (a) No (b) Yes
  6. 6.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2>     (a) #box (b) li (c) #main (d) .star
  7. 7.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
  8. 8.🎯 Which element does the selector #top style? (a) <span class="top"> (b) <p class="red"> (c) <span id="intro"> (d) <span id="top">
  9. 9.True or false: .big is a class selector. (a) False (b) True
  10. 10.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
  11. 11.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
  12. 12.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
  13. 13.True or false: h1 is a class selector. (a) False (b) True
  14. 14.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
  15. 15.🎯 Which element does the selector li style? (a) <div> (b) <p id="end"> (c) <span class="big"> (d) <li class="big">
  16. 16.True or false: h1 is an id selector. (a) True (b) False
  17. 17.True or false: body is an element selector. (a) True (b) False
  18. 18.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div>     (a) .big (b) #note (c) .main (d) #main
  19. 19.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
  20. 20.True or false: #main is a class selector. (a) True (b) False
  21. 21.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
  22. 22.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <h2 class="note"> (c) <span id="logo"> (d) <li>
  23. 23.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
  24. 24.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2>     (a) .note (b) #logo (c) .big (d) li
  25. 25.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
  26. 26.True or false: #hero is an id selector. (a) True (b) False
  27. 27.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2>     (a) li (b) #star (c) .star (d) .menu
  28. 28.True or false: .note is an id selector. (a) False (b) True
  29. 29.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
  30. 30.🎯 Which element does the selector #intro style? (a) <li id="main"> (b) <li class="intro"> (c) <li id="intro"> (d) <div class="red">
  31. 31.True or false: .menu is an element selector. (a) True (b) False
  32. 32.🎯 Which element does the selector #hero style? (a) <li class="hero"> (b) <li id="hero"> (c) <li id="top"> (d) <div class="note">
  33. 33.True or false: #hero is a class selector. (a) True (b) False
  34. 34.True or false: #top is an element selector. (a) False (b) True
  35. 35.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p>     (a) .box (b) h1 (c) .red (d) #logo
  36. 36.True or false: p is an element selector. (a) True (b) False
  37. 37.🎯 Which element does the selector .menu style? (a) <h1 id="menu"> (b) <h2 class="big"> (c) <h1 class="note"> (d) <h1 class="menu">
  38. 38.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span>     (a) #main (b) #intro (c) p (d) .intro
  39. 39.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
  40. 40.🎯 Which element does the selector .box style? (a) <h1 class="star"> (b) <h1 id="box"> (c) <h2 class="menu"> (d) <h1 class="box">

Answer key

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

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