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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 395 · 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.🎯 Can many elements share the same class? (a) Yes (b) No
  2. 2.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
  3. 3.True or false: li is a class selector. (a) False (b) True
  4. 4.True or false: #main is an element selector. (a) True (b) False
  5. 5.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p>     (a) .hero (b) h1 (c) .red (d) #hero
  6. 6.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
  7. 7.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
  8. 8.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
  9. 9.🎯 Which element does the selector .big style? (a) <span class="big"> (b) <span class="red"> (c) <p class="box"> (d) <span id="big">
  10. 10.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
  11. 11.🎯 Which element does the selector #intro style? (a) <h1 class="intro"> (b) <h1 id="main"> (c) <h1 id="intro"> (d) <h2 class="menu">
  12. 12.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p>     (a) .menu (b) #star (c) p (d) #top
  13. 13.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2>     (a) #end (b) h2 (c) .logo (d) #note
  14. 14.True or false: .note is a class selector. (a) False (b) True
  15. 15.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div>     (a) span (b) .box (c) #main (d) .main
  16. 16.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
  17. 17.True or false: .big is a class selector. (a) True (b) False
  18. 18.🎯 Which CSS selector matches this element?
    <span class="menu" id="logo">Hello</span>     (a) .logo (b) #menu (c) span (d) .note
  19. 19.🎯 Which element does the selector #top style? (a) <h1 class="star"> (b) <p id="intro"> (c) <p class="top"> (d) <p id="top">
  20. 20.True or false: .menu is an id selector. (a) True (b) False
  21. 21.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
  22. 22.True or false: #end is an id selector. (a) True (b) False
  23. 23.🎯 Which element does the selector #intro style? (a) <p id="intro"> (b) <p class="intro"> (c) <p id="main"> (d) <h1 class="note">
  24. 24.🎯 Which element does the selector .box style? (a) <span id="box"> (b) <span class="star"> (c) <p class="menu"> (d) <span class="box">
  25. 25.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
  26. 26.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
  27. 27.True or false: .card is a class selector. (a) True (b) False
  28. 28.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
  29. 29.🎯 Which element does the selector .menu style? (a) <li class="menu"> (b) <li class="note"> (c) <div class="big"> (d) <li id="menu">
  30. 30.True or false: h1 is an element selector. (a) False (b) True
  31. 31.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
  32. 32.🎯 Which element does the selector #hero style? (a) <li class="box"> (b) <h2 id="hero"> (c) <h2 id="top"> (d) <h2 class="hero">
  33. 33.True or false: li is an element selector. (a) True (b) False
  34. 34.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <span id="hero"> (c) <li> (d) <h2 class="red">
  35. 35.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
  36. 36.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p>     (a) .hero (b) .big (c) h1 (d) #big
  37. 37.🎯 Which element does the selector .menu style? (a) <p id="menu"> (b) <h1 class="big"> (c) <p class="note"> (d) <p class="menu">
  38. 38.🎯 Which element does the selector .star style? (a) <h2 class="star"> (b) <h2 class="menu"> (c) <h2 id="star"> (d) <li class="note">
  39. 39.True or false: p is an id selector. (a) False (b) True
  40. 40.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span>     (a) #end (b) #logo (c) p (d) .logo

Answer key

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

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