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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 282 · 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: #hero is an element selector. (a) True (b) False
  2. 2.True or false: .star is a class selector. (a) False (b) True
  3. 3.🎯 Which CSS selector matches this element?
    <div class="menu" id="logo">Hello</div>     (a) #menu (b) .logo (c) #end (d) div
  4. 4.True or false: body is an element selector. (a) True (b) False
  5. 5.🎯 Which element does the selector li style? (a) <span class="red"> (b) <p id="top"> (c) <li class="red"> (d) <div>
  6. 6.🎯 Which element does the selector #logo style? (a) <p id="logo"> (b) <p id="end"> (c) <p class="logo"> (d) <h1 class="star">
  7. 7.🎯 Which element does the selector h2 style? (a) <h2 class="star"> (b) <li> (c) <span id="end"> (d) <div class="star">
  8. 8.🎯 Which element does the selector .box style? (a) <span class="star"> (b) <span id="box"> (c) <span class="box"> (d) <p class="menu">
  9. 9.🎯 Which element does the selector h2 style? (a) <div class="box"> (b) <li> (c) <span id="main"> (d) <h2 class="box">
  10. 10.True or false: #logo is an element selector. (a) False (b) True
  11. 11.🎯 Which element does the selector #logo style? (a) <div id="logo"> (b) <span class="red"> (c) <div class="logo"> (d) <div id="end">
  12. 12.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li>     (a) #intro (b) div (c) .note (d) #main
  13. 13.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div>     (a) #main (b) #logo (c) span (d) #star
  14. 14.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
  15. 15.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
  16. 16.🎯 Which element does the selector #intro style? (a) <p class="intro"> (b) <p id="main"> (c) <h1 class="big"> (d) <p id="intro">
  17. 17.True or false: .note is an id selector. (a) True (b) False
  18. 18.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
  19. 19.True or false: .star is an id selector. (a) True (b) False
  20. 20.🎯 Which CSS selector matches this element?
    <span class="menu" id="end">Hello</span>     (a) .end (b) #menu (c) span (d) #hero
  21. 21.🎯 Which element does the selector .box style? (a) <h1 class="menu"> (b) <p class="box"> (c) <p class="star"> (d) <p id="box">
  22. 22.True or false: #top is a class selector. (a) True (b) False
  23. 23.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
  24. 24.🎯 Which element does the selector .red style? (a) <h1 class="box"> (b) <h1 id="red"> (c) <h1 class="red"> (d) <h2 class="star">
  25. 25.True or false: #end is an element selector. (a) True (b) False
  26. 26.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
  27. 27.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span>     (a) p (b) .top (c) .red (d) .box
  28. 28.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
  29. 29.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
  30. 30.🎯 Which element does the selector div style? (a) <p class="red"> (b) <h1 id="intro"> (c) <span> (d) <div class="red">
  31. 31.🎯 Can many elements share the same class? (a) No (b) Yes
  32. 32.True or false: .big is an element selector. (a) False (b) True
  33. 33.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2>     (a) #top (b) .top (c) .big (d) #note
  34. 34.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span>     (a) .logo (b) #end (c) #box (d) span
  35. 35.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li>     (a) li (b) .note (c) #intro (d) #menu
  36. 36.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span>     (a) .red (b) .main (c) #big (d) span
  37. 37.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
  38. 38.🎯 Which element does the selector .note style? (a) <h2 class="big"> (b) <h2 class="note"> (c) <h2 id="note"> (d) <li class="red">
  39. 39.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p>     (a) #menu (b) #intro (c) .note (d) p
  40. 40.True or false: li is an id selector. (a) True (b) False

Answer key

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

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