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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 207 · 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 .red style? (a) <li class="box"> (b) <li class="red"> (c) <div class="star"> (d) <li id="red">
  2. 2.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
  3. 3.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
  4. 4.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
  5. 5.🎯 Can many elements share the same class? (a) Yes (b) No
  6. 6.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
  7. 7.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
  8. 8.True or false: p is an element selector. (a) False (b) True
  9. 9.True or false: .menu is an id selector. (a) False (b) True
  10. 10.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
  11. 11.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <div id="intro"> (c) <h2> (d) <h1 class="red">
  12. 12.True or false: h1 is a class selector. (a) False (b) True
  13. 13.🎯 Which element does the selector .note style? (a) <p class="note"> (b) <h1 class="red"> (c) <p id="note"> (d) <p class="big">
  14. 14.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1>     (a) #star (b) .main (c) h2 (d) .star
  15. 15.True or false: #logo is an id selector. (a) True (b) False
  16. 16.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
  17. 17.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
  18. 18.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span>     (a) span (b) #star (c) #logo (d) .menu
  19. 19.🎯 Which element does the selector .big style? (a) <span class="box"> (b) <div id="big"> (c) <div class="red"> (d) <div class="big">
  20. 20.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div>     (a) div (b) #logo (c) #box (d) .main
  21. 21.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div>     (a) span (b) #red (c) #top (d) #intro
  22. 22.True or false: img is an id selector. (a) False (b) True
  23. 23.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
  24. 24.True or false: img is an element selector. (a) True (b) False
  25. 25.True or false: .star is a class selector. (a) False (b) True
  26. 26.True or false: #logo is a class selector. (a) True (b) False
  27. 27.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
  28. 28.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span>     (a) .box (b) #main (c) #red (d) .main
  29. 29.True or false: .menu is a class selector. (a) True (b) False
  30. 30.🎯 Which element does the selector h1 style? (a) <h1 class="big"> (b) <div id="hero"> (c) <h2> (d) <li class="big">
  31. 31.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <h2> (c) <li class="box"> (d) <h1 class="box">
  32. 32.True or false: li is an id selector. (a) True (b) False
  33. 33.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li>     (a) #big (b) .big (c) div (d) .end
  34. 34.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
  35. 35.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div>     (a) div (b) #note (c) #top (d) .big
  36. 36.🎯 Which element does the selector .star style? (a) <p class="star"> (b) <p class="menu"> (c) <h1 class="note"> (d) <p id="star">
  37. 37.🎯 Which element does the selector .red style? (a) <h2 class="red"> (b) <h2 class="box"> (c) <h2 id="red"> (d) <li class="star">
  38. 38.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
  39. 39.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p>     (a) .red (b) #logo (c) #end (d) .logo
  40. 40.True or false: #end is an id selector. (a) True (b) False

Answer key

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

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