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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 608 · 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 #main? (a) an element selector (b) an id selector (c) a class selector
  2. 2.True or false: body is an element selector. (a) False (b) True
  3. 3.🎯 Which element does the selector #main style? (a) <div class="big"> (b) <li id="logo"> (c) <li class="main"> (d) <li id="main">
  4. 4.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
  5. 5.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
  6. 6.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
  7. 7.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
  8. 8.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
  9. 9.True or false: p is an element selector. (a) False (b) True
  10. 10.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div>     (a) .big (b) .end (c) #hero (d) span
  11. 11.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span>     (a) p (b) .top (c) .star (d) #top
  12. 12.True or false: .star is an id selector. (a) True (b) False
  13. 13.True or false: #end is an id selector. (a) True (b) False
  14. 14.True or false: .menu is an id selector. (a) False (b) True
  15. 15.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
  16. 16.True or false: .card is an id selector. (a) False (b) True
  17. 17.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p>     (a) #intro (b) .menu (c) .note (d) #menu
  18. 18.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
  19. 19.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
  20. 20.🎯 Which element does the selector h2 style? (a) <h2 class="star"> (b) <div class="star"> (c) <li> (d) <span id="hero">
  21. 21.True or false: .note is an element selector. (a) False (b) True
  22. 22.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
  23. 23.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
  24. 24.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
  25. 25.🎯 Can many elements share the same class? (a) No (b) Yes
  26. 26.True or false: .star is a class selector. (a) False (b) True
  27. 27.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span>     (a) .top (b) span (c) #intro (d) p
  28. 28.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span>     (a) span (b) p (c) .hero (d) .box
  29. 29.🎯 Which element does the selector #top style? (a) <span class="top"> (b) <p class="box"> (c) <span id="top"> (d) <span id="intro">
  30. 30.🎯 Which element does the selector .big style? (a) <span class="box"> (b) <div class="big"> (c) <div id="big"> (d) <div class="red">
  31. 31.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span>     (a) p (b) .note (c) #note (d) .big
  32. 32.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <span id="top"> (c) <li> (d) <h2 class="red">
  33. 33.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
  34. 34.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
  35. 35.True or false: .card is an element selector. (a) True (b) False
  36. 36.🎯 Which element does the selector span style? (a) <span class="box"> (b) <p> (c) <h1 class="box"> (d) <h2 id="intro">
  37. 37.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
  38. 38.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1>     (a) .note (b) .menu (c) #end (d) h2
  39. 39.🎯 Which element does the selector #main style? (a) <h1 class="menu"> (b) <p class="main"> (c) <p id="logo"> (d) <p id="main">
  40. 40.True or false: li is a class selector. (a) True (b) False

Answer key

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

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