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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 880 · 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.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
  2. 2.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
  3. 3.True or false: .big is an id selector. (a) True (b) False
  4. 4.True or false: .big is a class selector. (a) True (b) False
  5. 5.True or false: body is an element selector. (a) True (b) False
  6. 6.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
  7. 7.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
  8. 8.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span>     (a) .big (b) .logo (c) .red (d) #end
  9. 9.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
  10. 10.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2>     (a) .note (b) #menu (c) #logo (d) li
  11. 11.True or false: li is an element selector. (a) False (b) True
  12. 12.🎯 Which element does the selector .red style? (a) <li class="box"> (b) <div class="star"> (c) <li id="red"> (d) <li class="red">
  13. 13.True or false: .card is an id selector. (a) False (b) True
  14. 14.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span>     (a) #star (b) .hero (c) span (d) #top
  15. 15.🎯 Which element does the selector li style? (a) <div> (b) <li class="star"> (c) <p id="intro"> (d) <span class="star">
  16. 16.True or false: #hero is an id selector. (a) True (b) False
  17. 17.True or false: #main is a class selector. (a) True (b) False
  18. 18.🎯 Can many elements share the same class? (a) No (b) Yes
  19. 19.True or false: .menu is an element selector. (a) True (b) False
  20. 20.🎯 Which element does the selector .big style? (a) <span class="big"> (b) <p class="box"> (c) <span id="big"> (d) <span class="red">
  21. 21.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
  22. 22.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <div class="red"> (c) <h2 class="red"> (d) <li>
  23. 23.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
  24. 24.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p>     (a) .big (b) h1 (c) .end (d) #end
  25. 25.🎯 Which element does the selector p style? (a) <h1> (b) <li id="hero"> (c) <h2 class="big"> (d) <p class="big">
  26. 26.🎯 Which element does the selector #main style? (a) <li class="star"> (b) <h2 id="logo"> (c) <h2 class="main"> (d) <h2 id="main">
  27. 27.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p>     (a) .intro (b) #main (c) #intro (d) h1
  28. 28.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
  29. 29.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="star"> (c) <li id="top"> (d) <p class="star">
  30. 30.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
  31. 31.True or false: #top is a class selector. (a) True (b) False
  32. 32.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p>     (a) #top (b) #red (c) #intro (d) .top
  33. 33.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
  34. 34.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div>     (a) .red (b) span (c) #big (d) div
  35. 35.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
  36. 36.🎯 Which element does the selector #intro style? (a) <div id="main"> (b) <span class="big"> (c) <div id="intro"> (d) <div class="intro">
  37. 37.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
  38. 38.🎯 Which element does the selector li style? (a) <div> (b) <p id="top"> (c) <li class="note"> (d) <span class="note">
  39. 39.True or false: img is a class selector. (a) False (b) True
  40. 40.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h1 id="intro"> (c) <h2 class="star"> (d) <h1 id="top">

Answer key

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

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