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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 106 · 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 CSS selector matches this element?
    <li class="box" id="end">Hello</li>     (a) div (b) #hero (c) .end (d) li
  2. 2.🎯 Which element does the selector p style? (a) <p class="star"> (b) <li id="logo"> (c) <h1> (d) <h2 class="star">
  3. 3.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
  4. 4.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
  5. 5.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2>     (a) #logo (b) #end (c) .logo (d) li
  6. 6.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
  7. 7.🎯 Which element does the selector div style? (a) <h1 id="end"> (b) <p class="big"> (c) <div class="big"> (d) <span>
  8. 8.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
  9. 9.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h1 class="note"> (c) <h2> (d) <div id="intro">
  10. 10.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) 1 (d) any number
  11. 11.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
  12. 12.🎯 Can many elements share the same class? (a) Yes (b) No
  13. 13.🎯 Which element does the selector #logo style? (a) <p class="note"> (b) <span id="end"> (c) <span class="logo"> (d) <span id="logo">
  14. 14.True or false: #hero is a class selector. (a) True (b) False
  15. 15.True or false: .note is an id selector. (a) True (b) False
  16. 16.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
  17. 17.🎯 Which element does the selector .big style? (a) <p id="big"> (b) <h1 class="box"> (c) <p class="big"> (d) <p class="red">
  18. 18.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
  19. 19.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
  20. 20.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div>     (a) .top (b) div (c) .star (d) #box
  21. 21.True or false: .menu is a class selector. (a) True (b) False
  22. 22.🎯 Which element does the selector .red style? (a) <h1 class="red"> (b) <h2 class="star"> (c) <h1 class="box"> (d) <h1 id="red">
  23. 23.🎯 Which CSS selector matches this element?
    <li class="box" id="hero">Hello</li>     (a) div (b) #top (c) .star (d) .box
  24. 24.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
  25. 25.True or false: #top is an id selector. (a) True (b) False
  26. 26.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="end"> (c) <h1 class="big"> (d) <li class="big">
  27. 27.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
  28. 28.True or false: #top is a class selector. (a) False (b) True
  29. 29.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
  30. 30.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li class="note"> (c) <li id="note"> (d) <li class="big">
  31. 31.True or false: .big is an id selector. (a) True (b) False
  32. 32.True or false: li is an element selector. (a) True (b) False
  33. 33.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p>     (a) .star (b) #logo (c) #main (d) h1
  34. 34.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
  35. 35.True or false: .big is a class selector. (a) True (b) False
  36. 36.True or false: p is an element selector. (a) False (b) True
  37. 37.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <h2 class="red"> (c) <span id="hero"> (d) <li>
  38. 38.True or false: #logo is an id selector. (a) False (b) True
  39. 39.True or false: #end is an id selector. (a) True (b) False
  40. 40.🎯 Which element does the selector #hero style? (a) <h1 class="note"> (b) <p id="hero"> (c) <p id="top"> (d) <p class="hero">

Answer key

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

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