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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 503 · 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: .note is an element selector. (a) True (b) False
  2. 2.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
  3. 3.🎯 Can many elements share the same class? (a) Yes (b) No
  4. 4.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p>     (a) .menu (b) .top (c) #star (d) p
  5. 5.True or false: .card is an id selector. (a) True (b) False
  6. 6.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
  7. 7.True or false: .card is a class selector. (a) False (b) True
  8. 8.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
  9. 9.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p>     (a) #intro (b) p (c) h1 (d) .top
  10. 10.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span>     (a) #star (b) .top (c) .menu (d) #top
  11. 11.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
  12. 12.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span>     (a) span (b) .star (c) #top (d) .hero
  13. 13.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
  14. 14.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <li class="star"> (c) <h2 id="intro"> (d) <h2 id="main">
  15. 15.🎯 Which element does the selector .box style? (a) <span class="star"> (b) <span id="box"> (c) <p class="menu"> (d) <span class="box">
  16. 16.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li>     (a) .intro (b) li (c) #star (d) div
  17. 17.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
  18. 18.🎯 Which element does the selector .box style? (a) <div class="star"> (b) <div id="box"> (c) <span class="menu"> (d) <div class="box">
  19. 19.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
  20. 20.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
  21. 21.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div>     (a) .hero (b) .note (c) #top (d) #note
  22. 22.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li>     (a) #logo (b) #main (c) .main (d) div
  23. 23.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p>     (a) .red (b) p (c) #main (d) .intro
  24. 24.🎯 Which element does the selector .box style? (a) <li class="box"> (b) <div class="menu"> (c) <li class="star"> (d) <li id="box">
  25. 25.True or false: .star is an element selector. (a) True (b) False
  26. 26.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
  27. 27.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
  28. 28.True or false: p is an element selector. (a) False (b) True
  29. 29.🎯 Which element does the selector .menu style? (a) <p class="big"> (b) <span class="note"> (c) <span class="menu"> (d) <span id="menu">
  30. 30.🎯 Which element does the selector span style? (a) <h2 id="logo"> (b) <p> (c) <span class="star"> (d) <h1 class="star">
  31. 31.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2>     (a) #logo (b) #end (c) li (d) #star
  32. 32.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
  33. 33.🎯 Which element does the selector #end style? (a) <span class="end"> (b) <span id="end"> (c) <p class="big"> (d) <span id="hero">
  34. 34.🎯 Which element does the selector li style? (a) <div> (b) <li class="red"> (c) <p id="top"> (d) <span class="red">
  35. 35.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <span id="intro"> (c) <p class="big"> (d) <span class="top">
  36. 36.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2>     (a) li (b) .big (c) h2 (d) .logo
  37. 37.🎯 Which element does the selector #main style? (a) <span id="logo"> (b) <span id="main"> (c) <p class="big"> (d) <span class="main">
  38. 38.🎯 Which element does the selector #end style? (a) <div class="box"> (b) <li id="end"> (c) <li class="end"> (d) <li id="hero">
  39. 39.🎯 Which element does the selector #top style? (a) <p id="top"> (b) <p class="top"> (c) <p id="intro"> (d) <h1 class="red">
  40. 40.True or false: img is an element selector. (a) False (b) True

Answer key

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

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