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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 745 · 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.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
  2. 2.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="hero">Hello</h2>     (a) #hero (b) #menu (c) li (d) .hero
  3. 3.🎯 Which element does the selector h1 style? (a) <h1 class="red"> (b) <div id="logo"> (c) <li class="red"> (d) <h2>
  4. 4.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p>     (a) .hero (b) #hero (c) #note (d) h1
  5. 5.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div>     (a) #main (b) .main (c) #big (d) #logo
  6. 6.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
  7. 7.🎯 Which element does the selector h2 style? (a) <span id="hero"> (b) <div class="box"> (c) <h2 class="box"> (d) <li>
  8. 8.🎯 Which element does the selector div style? (a) <h1 id="hero"> (b) <p class="note"> (c) <span> (d) <div class="note">
  9. 9.🎯 Which CSS selector matches this element?
    <p class="star" id="logo">Hello</p>     (a) #end (b) #star (c) #logo (d) h1
  10. 10.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
  11. 11.🎯 Can many elements share the same class? (a) Yes (b) No
  12. 12.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1>     (a) h2 (b) #intro (c) #main (d) .intro
  13. 13.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
  14. 14.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h1 id="logo"> (c) <h2 class="big"> (d) <h1 id="main">
  15. 15.🎯 Which sign starts a class selector? (a) & (b) @ (c) . (d) #
  16. 16.🎯 Which element does the selector .red style? (a) <h2 id="red"> (b) <li class="star"> (c) <h2 class="box"> (d) <h2 class="red">
  17. 17.🎯 Which element does the selector h1 style? (a) <li class="big"> (b) <div id="top"> (c) <h2> (d) <h1 class="big">
  18. 18.True or false: img is an element selector. (a) True (b) False
  19. 19.🎯 Which element does the selector #intro style? (a) <h1 id="main"> (b) <h2 class="star"> (c) <h1 class="intro"> (d) <h1 id="intro">
  20. 20.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1>     (a) .box (b) .hero (c) #top (d) #hero
  21. 21.True or false: .star is a class selector. (a) False (b) True
  22. 22.True or false: h1 is an id selector. (a) True (b) False
  23. 23.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
  24. 24.True or false: .star is an id selector. (a) True (b) False
  25. 25.🎯 Which element does the selector #hero style? (a) <h2 id="hero"> (b) <li class="note"> (c) <h2 id="top"> (d) <h2 class="hero">
  26. 26.🎯 Which element does the selector #hero style? (a) <p id="hero"> (b) <h1 class="red"> (c) <p class="hero"> (d) <p id="top">
  27. 27.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span>     (a) span (b) #box (c) .star (d) p
  28. 28.True or false: .note is a class selector. (a) False (b) True
  29. 29.🎯 Which element does the selector #end style? (a) <h1 class="end"> (b) <h1 id="hero"> (c) <h1 id="end"> (d) <h2 class="big">
  30. 30.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span>     (a) #intro (b) p (c) #big (d) span
  31. 31.🎯 Which element does the selector #logo style? (a) <div id="end"> (b) <div id="logo"> (c) <span class="box"> (d) <div class="logo">
  32. 32.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
  33. 33.True or false: #top is an id selector. (a) True (b) False
  34. 34.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="red"> (c) <li id="end"> (d) <p class="red">
  35. 35.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h1 class="note"> (c) <h2 class="red"> (d) <h1 class="big">
  36. 36.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
  37. 37.🎯 Which element does the selector .star style? (a) <li class="star"> (b) <li class="menu"> (c) <li id="star"> (d) <div class="note">
  38. 38.True or false: #logo is an element selector. (a) False (b) True
  39. 39.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
  40. 40.🎯 Which element does the selector .red style? (a) <p class="box"> (b) <p id="red"> (c) <p class="red"> (d) <h1 class="star">

Answer key

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

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