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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 777 · 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 .menu? (a) an element selector (b) an id selector (c) a class selector
  2. 2.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
  3. 3.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
  4. 4.True or false: h1 is a class selector. (a) True (b) False
  5. 5.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
  6. 6.True or false: #hero is a class selector. (a) False (b) True
  7. 7.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
  8. 8.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p>     (a) #hero (b) .end (c) p (d) #red
  9. 9.True or false: #logo is a class selector. (a) False (b) True
  10. 10.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p>     (a) #end (b) .big (c) h1 (d) .logo
  11. 11.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
  12. 12.True or false: #top is a class selector. (a) False (b) True
  13. 13.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2>     (a) .logo (b) #red (c) .box (d) .red
  14. 14.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span>     (a) #main (b) .note (c) #menu (d) p
  15. 15.🎯 Can many elements share the same class? (a) No (b) Yes
  16. 16.True or false: .menu is an id selector. (a) True (b) False
  17. 17.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
  18. 18.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
  19. 19.🎯 Which element does the selector #end style? (a) <h1 class="note"> (b) <p class="end"> (c) <p id="end"> (d) <p id="hero">
  20. 20.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1>     (a) .star (b) .top (c) h2 (d) .menu
  21. 21.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
  22. 22.🎯 Which element does the selector div style? (a) <div class="note"> (b) <h1 id="top"> (c) <p class="note"> (d) <span>
  23. 23.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2>     (a) .menu (b) li (c) #intro (d) h2
  24. 24.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
  25. 25.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
  26. 26.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
  27. 27.True or false: #hero is an id selector. (a) True (b) False
  28. 28.🎯 Which element does the selector p style? (a) <h1> (b) <p class="red"> (c) <li id="top"> (d) <h2 class="red">
  29. 29.🎯 Which element does the selector .note style? (a) <p class="red"> (b) <span id="note"> (c) <span class="note"> (d) <span class="big">
  30. 30.True or false: #top is an id selector. (a) True (b) False
  31. 31.True or false: img is an id selector. (a) True (b) False
  32. 32.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span>     (a) .intro (b) #intro (c) #main (d) p
  33. 33.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2>     (a) .big (b) #note (c) #logo (d) .note
  34. 34.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
  35. 35.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="end"> (c) <div class="note"> (d) <li id="logo">
  36. 36.🎯 Which element does the selector .menu style? (a) <span class="note"> (b) <p class="big"> (c) <span id="menu"> (d) <span class="menu">
  37. 37.🎯 Which element does the selector li style? (a) <p id="top"> (b) <li class="note"> (c) <div> (d) <span class="note">
  38. 38.True or false: .big is an id selector. (a) False (b) True
  39. 39.True or false: .card is an element selector. (a) False (b) True
  40. 40.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span>     (a) #top (b) span (c) p (d) #box

Answer key

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

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