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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 77 · 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.True or false: #end is an element selector. (a) True (b) False
  2. 2.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div>     (a) .top (b) #box (c) div (d) span
  3. 3.True or false: #hero is a class selector. (a) True (b) False
  4. 4.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div>     (a) #hero (b) .hero (c) .note (d) #top
  5. 5.True or false: #end is a class selector. (a) True (b) False
  6. 6.True or false: .note is a class selector. (a) False (b) True
  7. 7.🎯 What kind of selector is .card? (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.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
  10. 10.True or false: p is a class selector. (a) True (b) False
  11. 11.🎯 Which element does the selector .box style? (a) <li id="box"> (b) <li class="star"> (c) <li class="box"> (d) <div class="menu">
  12. 12.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
  13. 13.True or false: .big is a class selector. (a) False (b) True
  14. 14.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
  15. 15.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li>     (a) #red (b) #end (c) div (d) #hero
  16. 16.True or false: #hero is an id selector. (a) True (b) False
  17. 17.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span>     (a) .hero (b) .red (c) span (d) #big
  18. 18.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
  19. 19.True or false: img is an element selector. (a) False (b) True
  20. 20.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
  21. 21.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
  22. 22.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span>     (a) .top (b) span (c) #intro (d) .menu
  23. 23.True or false: li is a class selector. (a) True (b) False
  24. 24.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p>     (a) #box (b) h1 (c) #intro (d) #main
  25. 25.🎯 Which element does the selector .big style? (a) <div class="red"> (b) <div id="big"> (c) <div class="big"> (d) <span class="box">
  26. 26.🎯 Which element does the selector #logo style? (a) <h2 class="box"> (b) <h1 class="logo"> (c) <h1 id="logo"> (d) <h1 id="end">
  27. 27.True or false: .menu is an id selector. (a) True (b) False
  28. 28.True or false: #main is a class selector. (a) False (b) True
  29. 29.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div>     (a) div (b) #star (c) span (d) .hero
  30. 30.🎯 Which element does the selector h2 style? (a) <span id="hero"> (b) <div class="star"> (c) <li> (d) <h2 class="star">
  31. 31.🎯 Can many elements share the same class? (a) Yes (b) No
  32. 32.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p>     (a) .end (b) #note (c) h1 (d) p
  33. 33.🎯 Which element does the selector #intro style? (a) <h2 class="star"> (b) <h1 id="main"> (c) <h1 id="intro"> (d) <h1 class="intro">
  34. 34.🎯 Which element does the selector p style? (a) <li id="top"> (b) <p class="star"> (c) <h1> (d) <h2 class="star">
  35. 35.🎯 Which element does the selector #main style? (a) <p class="main"> (b) <p id="main"> (c) <h1 class="menu"> (d) <p id="logo">
  36. 36.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1>     (a) .end (b) .red (c) h2 (d) #end
  37. 37.True or false: li is an id selector. (a) False (b) True
  38. 38.True or false: body is an element selector. (a) True (b) False
  39. 39.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
  40. 40.True or false: #top is an id selector. (a) True (b) False

Answer key

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

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