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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 653 · 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: #main is an id selector. (a) False (b) True
  2. 2.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1>     (a) #intro (b) #note (c) #top (d) .top
  3. 3.True or false: .menu is an element selector. (a) False (b) True
  4. 4.🎯 Which element does the selector div style? (a) <h1 id="end"> (b) <p class="box"> (c) <div class="box"> (d) <span>
  5. 5.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p>     (a) .menu (b) h1 (c) .star (d) #star
  6. 6.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p>     (a) #top (b) h1 (c) .top (d) #red
  7. 7.🎯 Which element does the selector .red style? (a) <li class="star"> (b) <h2 class="box"> (c) <h2 class="red"> (d) <h2 id="red">
  8. 8.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
  9. 9.True or false: .menu is a class selector. (a) True (b) False
  10. 10.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
  11. 11.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
  12. 12.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p>     (a) h1 (b) #big (c) p (d) .top
  13. 13.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
  14. 14.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1>     (a) #end (b) #hero (c) #menu (d) .note
  15. 15.True or false: .card is a class selector. (a) True (b) False
  16. 16.🎯 Which CSS selector matches this element?
    <p class="star" id="logo">Hello</p>     (a) p (b) .logo (c) #star (d) h1
  17. 17.True or false: #end is an id selector. (a) True (b) False
  18. 18.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <li class="note"> (c) <h1 class="note"> (d) <h2>
  19. 19.True or false: h1 is an element selector. (a) True (b) False
  20. 20.🎯 Which element does the selector .red style? (a) <h1 class="box"> (b) <h1 id="red"> (c) <h2 class="star"> (d) <h1 class="red">
  21. 21.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
  22. 22.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p>     (a) #red (b) #end (c) h1 (d) p
  23. 23.True or false: #end is an element selector. (a) False (b) True
  24. 24.🎯 Which element does the selector .menu style? (a) <h2 class="big"> (b) <h1 class="menu"> (c) <h1 class="note"> (d) <h1 id="menu">
  25. 25.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
  26. 26.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span>     (a) p (b) .top (c) span (d) #star
  27. 27.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li>     (a) #logo (b) #menu (c) .main (d) #main
  28. 28.🎯 Can many elements share the same class? (a) Yes (b) No
  29. 29.True or false: .big is an element selector. (a) True (b) False
  30. 30.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <li> (c) <h2 class="box"> (d) <div class="box">
  31. 31.🎯 Which element does the selector .menu style? (a) <h2 id="menu"> (b) <h2 class="note"> (c) <h2 class="menu"> (d) <li class="big">
  32. 32.True or false: .big is an id selector. (a) False (b) True
  33. 33.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h1 id="logo"> (c) <h1 id="main"> (d) <h2 class="note">
  34. 34.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <h1 class="big"> (c) <h2> (d) <li class="big">
  35. 35.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2>     (a) #box (b) .star (c) #main (d) .main
  36. 36.🎯 Which element does the selector #end style? (a) <li id="end"> (b) <div class="big"> (c) <li id="hero"> (d) <li class="end">
  37. 37.🎯 Which element does the selector .red style? (a) <li class="box"> (b) <li id="red"> (c) <div class="star"> (d) <li class="red">
  38. 38.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
  39. 39.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
  40. 40.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector

Answer key

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

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