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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 918 · 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.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span>     (a) .big (b) .note (c) #main (d) #note
  2. 2.True or false: .big is a class selector. (a) True (b) False
  3. 3.True or false: #end is an id selector. (a) True (b) False
  4. 4.🎯 Which element does the selector #end style? (a) <p id="hero"> (b) <p class="end"> (c) <h1 class="red"> (d) <p id="end">
  5. 5.True or false: #main is an id selector. (a) False (b) True
  6. 6.🎯 Which element does the selector #intro style? (a) <span id="intro"> (b) <p class="menu"> (c) <span id="main"> (d) <span class="intro">
  7. 7.🎯 Which CSS selector matches this element?
    <div class="star" id="intro">Hello</div>     (a) .intro (b) div (c) #main (d) span
  8. 8.True or false: .star is an element selector. (a) True (b) False
  9. 9.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p>     (a) .intro (b) #main (c) p (d) .big
  10. 10.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <span id="logo"> (c) <h2 class="red"> (d) <li>
  11. 11.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
  12. 12.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
  13. 13.🎯 Which element does the selector h1 style? (a) <div id="main"> (b) <h2> (c) <h1 class="big"> (d) <li class="big">
  14. 14.🎯 Which CSS selector matches this element?
    <p class="star" id="end">Hello</p>     (a) #star (b) .menu (c) #end (d) #hero
  15. 15.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p>     (a) .menu (b) #main (c) #intro (d) #star
  16. 16.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
  17. 17.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
  18. 18.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
  19. 19.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div>     (a) div (b) .big (c) #end (d) .logo
  20. 20.True or false: #hero is an id selector. (a) True (b) False
  21. 21.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
  22. 22.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1>     (a) #box (b) .top (c) h2 (d) h1
  23. 23.🎯 Which element does the selector #end style? (a) <li class="end"> (b) <li id="hero"> (c) <li id="end"> (d) <div class="note">
  24. 24.True or false: p is an element selector. (a) True (b) False
  25. 25.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
  26. 26.🎯 Which sign starts an id selector? (a) @ (b) # (c) . (d) &
  27. 27.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
  28. 28.True or false: .star is a class selector. (a) True (b) False
  29. 29.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
  30. 30.🎯 Which element does the selector #logo style? (a) <h1 id="logo"> (b) <h1 class="logo"> (c) <h2 class="menu"> (d) <h1 id="end">
  31. 31.True or false: .menu is an id selector. (a) True (b) False
  32. 32.🎯 Which element does the selector li style? (a) <p id="main"> (b) <div> (c) <span class="box"> (d) <li class="box">
  33. 33.True or false: .star is an id selector. (a) True (b) False
  34. 34.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
  35. 35.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
  36. 36.🎯 Which CSS selector matches this element?
    <h2 class="star" id="end">Hello</h2>     (a) li (b) .menu (c) h2 (d) #star
  37. 37.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div>     (a) span (b) #hero (c) #top (d) .hero
  38. 38.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
  39. 39.True or false: .note is an id selector. (a) True (b) False
  40. 40.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div>     (a) span (b) #hero (c) #end (d) #red

Answer key

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

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