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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 519 · 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 sign starts a class selector? (a) # (b) @ (c) & (d) .
  2. 2.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
  3. 3.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h1 class="note"> (c) <div id="top"> (d) <h2>
  4. 4.True or false: img is an element selector. (a) False (b) True
  5. 5.True or false: #logo is an element selector. (a) False (b) True
  6. 6.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
  7. 7.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
  8. 8.True or false: li is an element selector. (a) True (b) False
  9. 9.🎯 Which element does the selector .menu style? (a) <h1 class="big"> (b) <p class="note"> (c) <p id="menu"> (d) <p class="menu">
  10. 10.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
  11. 11.True or false: #top is an element selector. (a) False (b) True
  12. 12.🎯 Which element does the selector .star style? (a) <h2 class="menu"> (b) <h2 class="star"> (c) <li class="note"> (d) <h2 id="star">
  13. 13.🎯 Can many elements share the same class? (a) Yes (b) No
  14. 14.True or false: .card is an element selector. (a) False (b) True
  15. 15.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li>     (a) .note (b) #menu (c) #main (d) li
  16. 16.🎯 Which element does the selector .red style? (a) <h2 class="star"> (b) <h1 class="box"> (c) <h1 class="red"> (d) <h1 id="red">
  17. 17.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span>     (a) #box (b) #hero (c) p (d) .star
  18. 18.True or false: li is an id selector. (a) False (b) True
  19. 19.🎯 Which CSS selector matches this element?
    <h2 class="star" id="main">Hello</h2>     (a) #star (b) .menu (c) h2 (d) .main
  20. 20.True or false: body is an element selector. (a) False (b) True
  21. 21.True or false: #logo is an id selector. (a) True (b) False
  22. 22.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span>     (a) #logo (b) p (c) #note (d) #main
  23. 23.True or false: #main is an element selector. (a) True (b) False
  24. 24.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
  25. 25.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span>     (a) .main (b) #red (c) #logo (d) #main
  26. 26.🎯 Which element does the selector li style? (a) <span class="note"> (b) <div> (c) <li class="note"> (d) <p id="intro">
  27. 27.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
  28. 28.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1>     (a) #note (b) #logo (c) h1 (d) .big
  29. 29.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
  30. 30.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1>     (a) #note (b) .note (c) .end (d) h2
  31. 31.🎯 Which element does the selector .big style? (a) <h2 class="box"> (b) <h1 id="big"> (c) <h1 class="big"> (d) <h1 class="red">
  32. 32.🎯 Which element does the selector #hero style? (a) <span class="note"> (b) <div id="top"> (c) <div class="hero"> (d) <div id="hero">
  33. 33.🎯 Which element does the selector p style? (a) <h2 class="red"> (b) <p class="red"> (c) <li id="main"> (d) <h1>
  34. 34.True or false: p is an id selector. (a) False (b) True
  35. 35.True or false: .card is a class selector. (a) True (b) False
  36. 36.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
  37. 37.🎯 Which element does the selector .note style? (a) <h2 id="note"> (b) <li class="red"> (c) <h2 class="big"> (d) <h2 class="note">
  38. 38.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1>     (a) #intro (b) .star (c) .box (d) .top
  39. 39.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span>     (a) .note (b) #intro (c) #note (d) .top
  40. 40.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p>     (a) .logo (b) #red (c) .red (d) h1

Answer key

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

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