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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 983 · 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.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
  2. 2.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2>     (a) li (b) .top (c) #intro (d) h2
  3. 3.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
  4. 4.True or false: #end is a class selector. (a) True (b) False
  5. 5.🎯 Which element does the selector h1 style? (a) <div id="main"> (b) <h2> (c) <li class="note"> (d) <h1 class="note">
  6. 6.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1>     (a) #note (b) .note (c) .big (d) #intro
  7. 7.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
  8. 8.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div>     (a) span (b) .red (c) .top (d) div
  9. 9.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
  10. 10.True or false: .card is an id selector. (a) True (b) False
  11. 11.True or false: h1 is an element selector. (a) True (b) False
  12. 12.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
  13. 13.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
  14. 14.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
  15. 15.True or false: img is an element selector. (a) False (b) True
  16. 16.True or false: .star is a class selector. (a) True (b) False
  17. 17.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
  18. 18.True or false: #top is an element selector. (a) False (b) True
  19. 19.🎯 Which CSS selector matches this element?
    <h2 class="star" id="end">Hello</h2>     (a) #star (b) .menu (c) #end (d) li
  20. 20.True or false: .menu is a class selector. (a) False (b) True
  21. 21.True or false: li is a class selector. (a) True (b) False
  22. 22.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
  23. 23.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span>     (a) span (b) #menu (c) .note (d) .hero
  24. 24.True or false: .menu is an element selector. (a) True (b) False
  25. 25.True or false: #top is an id selector. (a) False (b) True
  26. 26.🎯 Which element does the selector .box style? (a) <h1 class="box"> (b) <h1 class="star"> (c) <h1 id="box"> (d) <h2 class="menu">
  27. 27.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
  28. 28.True or false: #end is an id selector. (a) False (b) True
  29. 29.🎯 Can many elements share the same class? (a) No (b) Yes
  30. 30.True or false: #main is a class selector. (a) True (b) False
  31. 31.True or false: .big is an element selector. (a) True (b) False
  32. 32.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1>     (a) h2 (b) .box (c) #logo (d) #box
  33. 33.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
  34. 34.🎯 Which element does the selector div style? (a) <div class="big"> (b) <span> (c) <h1 id="top"> (d) <p class="big">
  35. 35.🎯 Which element does the selector p style? (a) <li id="main"> (b) <h2 class="red"> (c) <h1> (d) <p class="red">
  36. 36.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
  37. 37.🎯 Which element does the selector p style? (a) <li id="main"> (b) <p class="menu"> (c) <h2 class="menu"> (d) <h1>
  38. 38.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
  39. 39.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li>     (a) #end (b) div (c) .red (d) #hero
  40. 40.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector

Answer key

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

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