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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 229 · 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: .star is a class selector. (a) False (b) True
  2. 2.True or false: .menu is a class selector. (a) True (b) False
  3. 3.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
  4. 4.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p>     (a) .hero (b) #hero (c) .red (d) h1
  5. 5.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <div id="logo"> (c) <h2> (d) <h1 class="red">
  6. 6.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
  7. 7.True or false: li is a class selector. (a) False (b) True
  8. 8.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
  9. 9.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
  10. 10.True or false: li is an element selector. (a) False (b) True
  11. 11.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
  12. 12.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2>     (a) .box (b) #red (c) #end (d) #hero
  13. 13.🎯 Which element does the selector .red style? (a) <h1 id="red"> (b) <h2 class="star"> (c) <h1 class="box"> (d) <h1 class="red">
  14. 14.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
  15. 15.True or false: h1 is an element selector. (a) True (b) False
  16. 16.True or false: #end is an id selector. (a) False (b) True
  17. 17.🎯 Which element does the selector li style? (a) <span class="menu"> (b) <div> (c) <li class="menu"> (d) <p id="intro">
  18. 18.🎯 Can many elements share the same class? (a) No (b) Yes
  19. 19.True or false: body is an element selector. (a) True (b) False
  20. 20.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
  21. 21.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
  22. 22.🎯 Which element does the selector #intro style? (a) <div class="box"> (b) <li id="main"> (c) <li class="intro"> (d) <li id="intro">
  23. 23.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span>     (a) #main (b) .main (c) .box (d) #red
  24. 24.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
  25. 25.🎯 Which element does the selector #top style? (a) <p class="top"> (b) <p id="intro"> (c) <p id="top"> (d) <h1 class="box">
  26. 26.True or false: .card is an id selector. (a) True (b) False
  27. 27.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1>     (a) .top (b) #top (c) h2 (d) .menu
  28. 28.True or false: p is an id selector. (a) False (b) True
  29. 29.True or false: #end is a class selector. (a) False (b) True
  30. 30.🎯 Which element does the selector span style? (a) <h2 id="end"> (b) <p> (c) <h1 class="menu"> (d) <span class="menu">
  31. 31.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p>     (a) #big (b) h1 (c) .red (d) .big
  32. 32.True or false: #logo is an id selector. (a) False (b) True
  33. 33.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div>     (a) #top (b) .top (c) span (d) .big
  34. 34.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1>     (a) h2 (b) .big (c) #main (d) .main
  35. 35.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
  36. 36.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1>     (a) #menu (b) .note (c) #logo (d) .logo
  37. 37.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
  38. 38.🎯 Which element does the selector .note style? (a) <div class="big"> (b) <span class="red"> (c) <div id="note"> (d) <div class="note">
  39. 39.True or false: .card is a class selector. (a) True (b) False
  40. 40.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector

Answer key

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

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