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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 74 · 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 .star? (a) an element selector (b) a class selector (c) an id selector
  2. 2.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p>
    (a) #top (b) #hero (c) .hero (d) h1
  3. 3.True or false: p is an element selector. (a) True (b) False
  4. 4.🎯 Which element does the selector #top style? (a) <p id="top"> (b) <p id="intro"> (c) <h1 class="big"> (d) <p class="top">
  5. 5.True or false: h1 is a class selector. (a) False (b) True
  6. 6.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) 1 (d) any number
  7. 7.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
  8. 8.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
  9. 9.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <h2> (c) <h1 class="red"> (d) <div id="end">
  10. 10.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span>
    (a) #intro (b) span (c) .red (d) #big
  11. 11.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <p> (c) <h1 class="red"> (d) <span class="red">
  12. 12.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
  13. 13.True or false: .star is a class selector. (a) True (b) False
  14. 14.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p>
    (a) #main (b) .box (c) #red (d) .red
  15. 15.🎯 Which element does the selector .menu style? (a) <p class="note"> (b) <h1 class="big"> (c) <p id="menu"> (d) <p class="menu">
  16. 16.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
  17. 17.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div>
    (a) .red (b) span (c) .big (d) #big
  18. 18.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1>
    (a) .note (b) #note (c) h2 (d) #top
  19. 19.True or false: #top is an id selector. (a) True (b) False
  20. 20.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2>
    (a) .note (b) .top (c) li (d) .big
  21. 21.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
  22. 22.🎯 Which element does the selector .note style? (a) <li id="note"> (b) <div class="red"> (c) <li class="note"> (d) <li class="big">
  23. 23.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p>
    (a) #end (b) .end (c) .red (d) #big
  24. 24.True or false: p is an id selector. (a) False (b) True
  25. 25.True or false: img is an element selector. (a) False (b) True
  26. 26.True or false: body is an element selector. (a) False (b) True
  27. 27.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
  28. 28.True or false: #main is an element selector. (a) False (b) True
  29. 29.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
  30. 30.True or false: h1 is an element selector. (a) False (b) True
  31. 31.True or false: .big is a class selector. (a) False (b) True
  32. 32.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
  33. 33.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2>
    (a) h2 (b) .big (c) li (d) #top
  34. 34.🎯 Which element does the selector h2 style? (a) <h2 class="menu"> (b) <span id="logo"> (c) <li> (d) <div class="menu">
  35. 35.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2>
    (a) .top (b) #intro (c) h2 (d) .big
  36. 36.True or false: #main is a class selector. (a) True (b) False
  37. 37.🎯 Which element does the selector .star style? (a) <h2 class="menu"> (b) <h2 id="star"> (c) <li class="note"> (d) <h2 class="star">
  38. 38.True or false: img is an id selector. (a) False (b) True
  39. 39.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li>
    (a) #logo (b) .main (c) li (d) .note
  40. 40.🎯 Which element does the selector #hero style? (a) <h1 id="top"> (b) <h1 class="hero"> (c) <h1 id="hero"> (d) <h2 class="star">

Answer key

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

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