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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 256 · 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 element does the selector #main style? (a) <h2 id="main"> (b) <h2 class="main"> (c) <li class="red"> (d) <h2 id="logo">
  2. 2.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
  3. 3.True or false: .note is an element selector. (a) False (b) True
  4. 4.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <h1> (c) <p class="red"> (d) <h2 class="red">
  5. 5.🎯 Which element does the selector .big style? (a) <p id="big"> (b) <p class="red"> (c) <p class="big"> (d) <h1 class="box">
  6. 6.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2>     (a) li (b) h2 (c) #main (d) #box
  7. 7.True or false: h1 is an id selector. (a) True (b) False
  8. 8.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
  9. 9.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
  10. 10.True or false: .menu is an id selector. (a) True (b) False
  11. 11.True or false: p is a class selector. (a) False (b) True
  12. 12.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div>     (a) div (b) span (c) #top (d) #red
  13. 13.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
  14. 14.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
  15. 15.🎯 Which element does the selector #end style? (a) <h2 class="end"> (b) <li class="note"> (c) <h2 id="end"> (d) <h2 id="hero">
  16. 16.🎯 Which element does the selector h2 style? (a) <div class="menu"> (b) <span id="hero"> (c) <h2 class="menu"> (d) <li>
  17. 17.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
  18. 18.True or false: .big is an element selector. (a) False (b) True
  19. 19.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
  20. 20.True or false: h1 is an element selector. (a) False (b) True
  21. 21.True or false: .star is a class selector. (a) False (b) True
  22. 22.True or false: h1 is a class selector. (a) True (b) False
  23. 23.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div>     (a) #main (b) span (c) #intro (d) .intro
  24. 24.🎯 Which element does the selector .note style? (a) <h2 class="note"> (b) <li class="red"> (c) <h2 class="big"> (d) <h2 id="note">
  25. 25.True or false: #top is an id selector. (a) False (b) True
  26. 26.True or false: .menu is an element selector. (a) False (b) True
  27. 27.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2>     (a) li (b) #big (c) .big (d) #hero
  28. 28.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
  29. 29.True or false: #top is an element selector. (a) True (b) False
  30. 30.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
  31. 31.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span>     (a) #top (b) .menu (c) #hero (d) #star
  32. 32.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <p class="menu"> (c) <span class="top"> (d) <span id="intro">
  33. 33.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
  34. 34.True or false: img is an element selector. (a) True (b) False
  35. 35.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2>     (a) #big (b) #top (c) #intro (d) li
  36. 36.True or false: .star is an id selector. (a) True (b) False
  37. 37.True or false: #hero is an element selector. (a) True (b) False
  38. 38.True or false: .menu is a class selector. (a) True (b) False
  39. 39.True or false: #main is an id selector. (a) False (b) True
  40. 40.True or false: #hero is a class selector. (a) False (b) True

Answer key

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

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