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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 245 · 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="logo">Hello</h2>     (a) #note (b) #end (c) .logo (d) h2
  3. 3.True or false: #hero is an element selector. (a) True (b) False
  4. 4.True or false: #main is an element selector. (a) True (b) False
  5. 5.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
  6. 6.True or false: h1 is a class selector. (a) True (b) False
  7. 7.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span>     (a) p (b) #main (c) #star (d) .main
  8. 8.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
  9. 9.🎯 Can many elements share the same class? (a) Yes (b) No
  10. 10.True or false: #hero is a class selector. (a) False (b) True
  11. 11.True or false: .big is an element selector. (a) True (b) False
  12. 12.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li>     (a) div (b) #top (c) #note (d) .top
  13. 13.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
  14. 14.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span>     (a) #big (b) #end (c) .logo (d) span
  15. 15.True or false: p is an element selector. (a) False (b) True
  16. 16.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <li class="menu"> (c) <h2 id="intro"> (d) <h2 id="main">
  17. 17.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
  18. 18.🎯 Which element does the selector .red style? (a) <li class="red"> (b) <div class="star"> (c) <li class="box"> (d) <li id="red">
  19. 19.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
  20. 20.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1>     (a) h2 (b) .note (c) .big (d) #note
  21. 21.True or false: #main is an id selector. (a) True (b) False
  22. 22.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
  23. 23.🎯 Which element does the selector li style? (a) <span class="star"> (b) <div> (c) <li class="star"> (d) <p id="intro">
  24. 24.True or false: .card is an id selector. (a) True (b) False
  25. 25.True or false: .menu is a class selector. (a) False (b) True
  26. 26.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div>     (a) .top (b) #star (c) .menu (d) div
  27. 27.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1>     (a) #hero (b) #box (c) .star (d) .box
  28. 28.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2>     (a) li (b) #red (c) #end (d) .end
  29. 29.🎯 Which element does the selector span style? (a) <span class="menu"> (b) <h1 class="menu"> (c) <h2 id="top"> (d) <p>
  30. 30.🎯 Which element does the selector #hero style? (a) <span class="note"> (b) <div class="hero"> (c) <div id="top"> (d) <div id="hero">
  31. 31.True or false: #logo is an id selector. (a) True (b) False
  32. 32.True or false: h1 is an element selector. (a) True (b) False
  33. 33.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
  34. 34.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
  35. 35.🎯 Which element does the selector #end style? (a) <li class="note"> (b) <h2 class="end"> (c) <h2 id="end"> (d) <h2 id="hero">
  36. 36.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span>     (a) .intro (b) #main (c) #note (d) #intro
  37. 37.🎯 Which element does the selector .box style? (a) <h2 id="box"> (b) <h2 class="star"> (c) <h2 class="box"> (d) <li class="menu">
  38. 38.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
  39. 39.🎯 Which element does the selector .red style? (a) <p class="red"> (b) <p class="box"> (c) <p id="red"> (d) <h1 class="star">
  40. 40.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li>     (a) div (b) #menu (c) li (d) .top

Answer key

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

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