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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 601 · 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 .big? (a) an element selector (b) an id selector (c) a class selector
  2. 2.🎯 Which element does the selector .menu style? (a) <h1 class="big"> (b) <p class="menu"> (c) <p class="note"> (d) <p id="menu">
  3. 3.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li>     (a) #note (b) li (c) div (d) .intro
  4. 4.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div>     (a) span (b) #intro (c) .top (d) #top
  5. 5.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1>     (a) .top (b) #menu (c) h1 (d) .note
  6. 6.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <h1> (c) <h2 class="star"> (d) <p class="star">
  7. 7.🎯 Can many elements share the same class? (a) Yes (b) No
  8. 8.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li>     (a) .logo (b) .note (c) .menu (d) #end
  9. 9.True or false: p is a class selector. (a) False (b) True
  10. 10.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2>     (a) .star (b) #box (c) li (d) .box
  11. 11.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
  12. 12.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
  13. 13.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
  14. 14.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
  15. 15.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
  16. 16.🎯 Which element does the selector p style? (a) <p class="red"> (b) <h1> (c) <h2 class="red"> (d) <li id="main">
  17. 17.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
  18. 18.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div>     (a) .hero (b) #top (c) #hero (d) .star
  19. 19.🎯 Which element does the selector .star style? (a) <h1 class="menu"> (b) <h1 id="star"> (c) <h1 class="star"> (d) <h2 class="note">
  20. 20.🎯 Which element does the selector #end style? (a) <span id="hero"> (b) <p class="red"> (c) <span class="end"> (d) <span id="end">
  21. 21.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
  22. 22.🎯 Which element does the selector .box style? (a) <p id="box"> (b) <p class="star"> (c) <h1 class="menu"> (d) <p class="box">
  23. 23.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1>     (a) h2 (b) #logo (c) .red (d) #red
  24. 24.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div>     (a) #top (b) .red (c) span (d) #hero
  25. 25.🎯 Which element does the selector h2 style? (a) <h2 class="box"> (b) <li> (c) <div class="box"> (d) <span id="top">
  26. 26.🎯 Which element does the selector .red style? (a) <h2 class="box"> (b) <li class="star"> (c) <h2 class="red"> (d) <h2 id="red">
  27. 27.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <span class="box"> (c) <p class="star"> (d) <span class="red">
  28. 28.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
  29. 29.True or false: p is an id selector. (a) False (b) True
  30. 30.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div>     (a) .top (b) .box (c) #top (d) #red
  31. 31.True or false: p is an element selector. (a) True (b) False
  32. 32.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
  33. 33.True or false: li is an element selector. (a) False (b) True
  34. 34.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div>     (a) #box (b) div (c) .main (d) .star
  35. 35.🎯 Which element does the selector #intro style? (a) <li id="intro"> (b) <li id="main"> (c) <div class="box"> (d) <li class="intro">
  36. 36.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2>     (a) h2 (b) .top (c) li (d) #box
  37. 37.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li>     (a) #top (b) #intro (c) .top (d) #box
  38. 38.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li>     (a) #end (b) div (c) #big (d) .big
  39. 39.🎯 Which element does the selector li style? (a) <div> (b) <li class="big"> (c) <span class="big"> (d) <p id="top">
  40. 40.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1

Answer key

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

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