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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 590 · 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 a class selector. (a) True (b) False
  2. 2.🎯 Which element does the selector #end style? (a) <h1 class="end"> (b) <h2 class="box"> (c) <h1 id="hero"> (d) <h1 id="end">
  3. 3.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
  4. 4.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2>     (a) .intro (b) h2 (c) .red (d) li
  5. 5.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p>     (a) #menu (b) .intro (c) #intro (d) h1
  6. 6.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
  7. 7.🎯 Which CSS selector matches this element?
    <li class="red" id="main">Hello</li>     (a) li (b) #red (c) .main (d) div
  8. 8.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p>     (a) .main (b) .big (c) p (d) #logo
  9. 9.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
  10. 10.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div>     (a) .hero (b) div (c) #note (d) span
  11. 11.🎯 Which element does the selector .star style? (a) <span class="menu"> (b) <p class="note"> (c) <span class="star"> (d) <span id="star">
  12. 12.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
  13. 13.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
  14. 14.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p>     (a) .big (b) p (c) h1 (d) #main
  15. 15.🎯 Which element does the selector #top style? (a) <div id="top"> (b) <span class="box"> (c) <div id="intro"> (d) <div class="top">
  16. 16.🎯 Can many elements share the same class? (a) Yes (b) No
  17. 17.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <p> (c) <h2 id="end"> (d) <span class="box">
  18. 18.True or false: #logo is a class selector. (a) False (b) True
  19. 19.True or false: img is an element selector. (a) True (b) False
  20. 20.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div>     (a) #star (b) .top (c) .star (d) .menu
  21. 21.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
  22. 22.True or false: #main is an id selector. (a) False (b) True
  23. 23.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
  24. 24.True or false: #logo is an element selector. (a) False (b) True
  25. 25.🎯 Which element does the selector #end style? (a) <div id="hero"> (b) <div class="end"> (c) <span class="note"> (d) <div id="end">
  26. 26.True or false: #logo is an id selector. (a) True (b) False
  27. 27.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span>     (a) span (b) #top (c) .box (d) #red
  28. 28.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
  29. 29.🎯 Which element does the selector h1 style? (a) <h1 class="big"> (b) <h2> (c) <div id="hero"> (d) <li class="big">
  30. 30.🎯 Which element does the selector li style? (a) <span class="box"> (b) <p id="main"> (c) <li class="box"> (d) <div>
  31. 31.True or false: .big is a class selector. (a) False (b) True
  32. 32.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
  33. 33.True or false: li is an id selector. (a) False (b) True
  34. 34.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
  35. 35.True or false: body is an id selector. (a) False (b) True
  36. 36.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <div class="red"> (c) <h2 class="red"> (d) <li>
  37. 37.True or false: #hero is a class selector. (a) True (b) False
  38. 38.🎯 Which CSS selector matches this element?
    <p class="star" id="logo">Hello</p>     (a) #star (b) h1 (c) .logo (d) p
  39. 39.True or false: .card is a class selector. (a) True (b) False
  40. 40.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li>     (a) .star (b) .box (c) #intro (d) .top

Answer key

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

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