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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 560 · 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: .card is a class selector. (a) False (b) True
  2. 2.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <h2 id="logo"> (c) <li class="menu"> (d) <h2 id="end">
  3. 3.True or false: .note is an element selector. (a) False (b) True
  4. 4.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
  5. 5.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li>     (a) .note (b) .hero (c) div (d) .menu
  6. 6.🎯 Which element does the selector .red style? (a) <p id="red"> (b) <h1 class="star"> (c) <p class="red"> (d) <p class="box">
  7. 7.🎯 Can many elements share the same class? (a) No (b) Yes
  8. 8.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
  9. 9.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1>     (a) .end (b) #end (c) h2 (d) #menu
  10. 10.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
  11. 11.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p>     (a) h1 (b) #intro (c) p (d) .top
  12. 12.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
  13. 13.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
  14. 14.True or false: #end is an id selector. (a) False (b) True
  15. 15.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li>     (a) .menu (b) div (c) .intro (d) #menu
  16. 16.🎯 Which element does the selector .star style? (a) <h2 class="note"> (b) <h1 class="menu"> (c) <h1 id="star"> (d) <h1 class="star">
  17. 17.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
  18. 18.🎯 Which element does the selector #end style? (a) <p class="end"> (b) <p id="hero"> (c) <h1 class="big"> (d) <p id="end">
  19. 19.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span>     (a) #intro (b) #main (c) #star (d) p
  20. 20.🎯 Which element does the selector #end style? (a) <div id="hero"> (b) <div class="end"> (c) <div id="end"> (d) <span class="note">
  21. 21.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li>     (a) .hero (b) li (c) .big (d) div
  22. 22.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
  23. 23.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
  24. 24.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="red"> (c) <li class="red"> (d) <div id="top">
  25. 25.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
  26. 26.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div>     (a) #top (b) div (c) span (d) .hero
  27. 27.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
  28. 28.True or false: .menu is a class selector. (a) True (b) False
  29. 29.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
  30. 30.True or false: #end is a class selector. (a) False (b) True
  31. 31.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1>     (a) #menu (b) h1 (c) h2 (d) .note
  32. 32.🎯 Which element does the selector .menu style? (a) <li class="big"> (b) <h2 id="menu"> (c) <h2 class="menu"> (d) <h2 class="note">
  33. 33.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
  34. 34.True or false: p is a class selector. (a) False (b) True
  35. 35.True or false: .star is a class selector. (a) False (b) True
  36. 36.True or false: h1 is a class selector. (a) False (b) True
  37. 37.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li>     (a) div (b) .big (c) #main (d) .note
  38. 38.True or false: li is an id selector. (a) False (b) True
  39. 39.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span>     (a) .star (b) span (c) p (d) .hero
  40. 40.🎯 Which element does the selector .box style? (a) <div class="menu"> (b) <li id="box"> (c) <li class="star"> (d) <li class="box">

Answer key

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

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