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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 586 · 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 CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1>     (a) #top (b) .hero (c) .star (d) #star
  2. 2.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
  3. 3.True or false: .card is a class selector. (a) False (b) True
  4. 4.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
  5. 5.🎯 Which element does the selector #hero style? (a) <span class="note"> (b) <div class="hero"> (c) <div id="hero"> (d) <div id="top">
  6. 6.🎯 Which element does the selector h1 style? (a) <h1 class="star"> (b) <h2> (c) <li class="star"> (d) <div id="end">
  7. 7.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
  8. 8.True or false: #logo is an id selector. (a) True (b) False
  9. 9.True or false: li is an element selector. (a) False (b) True
  10. 10.🎯 Which element does the selector #hero style? (a) <h1 class="hero"> (b) <h1 id="hero"> (c) <h1 id="top"> (d) <h2 class="red">
  11. 11.🎯 Which element does the selector li style? (a) <li class="big"> (b) <div> (c) <p id="end"> (d) <span class="big">
  12. 12.True or false: img is a class selector. (a) True (b) False
  13. 13.True or false: body is an id selector. (a) False (b) True
  14. 14.🎯 Which element does the selector div style? (a) <h1 id="intro"> (b) <span> (c) <div class="menu"> (d) <p class="menu">
  15. 15.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span>     (a) .top (b) p (c) #red (d) #top
  16. 16.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
  17. 17.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2>     (a) .intro (b) li (c) h2 (d) .red
  18. 18.🎯 Which element does the selector .red style? (a) <h1 id="red"> (b) <h1 class="red"> (c) <h1 class="box"> (d) <h2 class="star">
  19. 19.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p>     (a) #big (b) .top (c) #intro (d) #top
  20. 20.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p>     (a) #end (b) #hero (c) h1 (d) .box
  21. 21.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p>     (a) .top (b) #intro (c) .big (d) h1
  22. 22.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
  23. 23.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
  24. 24.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div>     (a) span (b) .red (c) #big (d) #end
  25. 25.True or false: .menu is a class selector. (a) False (b) True
  26. 26.🎯 Can many elements share the same class? (a) Yes (b) No
  27. 27.True or false: .star is a class selector. (a) True (b) False
  28. 28.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
  29. 29.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div>     (a) #star (b) .main (c) #logo (d) div
  30. 30.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
  31. 31.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
  32. 32.True or false: #main is an id selector. (a) True (b) False
  33. 33.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
  34. 34.True or false: .big is an id selector. (a) True (b) False
  35. 35.🎯 Which element does the selector li style? (a) <div> (b) <span class="red"> (c) <li class="red"> (d) <p id="hero">
  36. 36.🎯 Which element does the selector #top style? (a) <li id="intro"> (b) <li id="top"> (c) <div class="big"> (d) <li class="top">
  37. 37.True or false: #end is an element selector. (a) True (b) False
  38. 38.True or false: #top is an id selector. (a) True (b) False
  39. 39.🎯 Which element does the selector h2 style? (a) <h2 class="menu"> (b) <li> (c) <div class="menu"> (d) <span id="hero">
  40. 40.🎯 Which element does the selector #hero style? (a) <h1 class="star"> (b) <p class="hero"> (c) <p id="top"> (d) <p id="hero">

Answer key

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

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