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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 47 · 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.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
  2. 2.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
  3. 3.🎯 Which CSS selector matches this element?
    <div class="star" id="logo">Hello</div>     (a) .menu (b) span (c) div (d) .logo
  4. 4.True or false: .star is a class selector. (a) True (b) False
  5. 5.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
  6. 6.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
  7. 7.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1>     (a) h2 (b) .top (c) #red (d) h1
  8. 8.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
  9. 9.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
  10. 10.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p>     (a) .menu (b) #menu (c) .logo (d) h1
  11. 11.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
  12. 12.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li>     (a) div (b) #big (c) .top (d) li
  13. 13.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
  14. 14.True or false: .big is an id selector. (a) False (b) True
  15. 15.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
  16. 16.True or false: #main is an id selector. (a) False (b) True
  17. 17.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="hero">Hello</h2>     (a) h2 (b) .hero (c) .note (d) #top
  18. 18.True or false: p is an id selector. (a) False (b) True
  19. 19.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="box"> (c) <div id="intro"> (d) <li class="box">
  20. 20.🎯 Which element does the selector li style? (a) <div> (b) <span class="big"> (c) <li class="big"> (d) <p id="end">
  21. 21.🎯 Which element does the selector #main style? (a) <li class="main"> (b) <li id="logo"> (c) <li id="main"> (d) <div class="note">
  22. 22.True or false: body is an element selector. (a) True (b) False
  23. 23.🎯 Which element does the selector h2 style? (a) <span id="logo"> (b) <h2 class="note"> (c) <div class="note"> (d) <li>
  24. 24.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
  25. 25.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li>     (a) #star (b) #end (c) .menu (d) li
  26. 26.True or false: .note is an id selector. (a) True (b) False
  27. 27.True or false: body is a class selector. (a) False (b) True
  28. 28.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
  29. 29.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) 1 (d) any number
  30. 30.True or false: li is an element selector. (a) True (b) False
  31. 31.🎯 Can many elements share the same class? (a) Yes (b) No
  32. 32.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p>     (a) #star (b) p (c) .top (d) h1
  33. 33.🎯 Which element does the selector p style? (a) <li id="logo"> (b) <h2 class="big"> (c) <p class="big"> (d) <h1>
  34. 34.True or false: #hero is an id selector. (a) True (b) False
  35. 35.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2>     (a) .intro (b) li (c) #intro (d) #main
  36. 36.True or false: p is an element selector. (a) False (b) True
  37. 37.True or false: h1 is an element selector. (a) False (b) True
  38. 38.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
  39. 39.True or false: .note is an element selector. (a) True (b) False
  40. 40.🎯 Which element does the selector .star style? (a) <h2 class="menu"> (b) <li class="note"> (c) <h2 id="star"> (d) <h2 class="star">

Answer key

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

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