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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 295 · 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 element does the selector #intro style? (a) <li class="intro"> (b) <li id="main"> (c) <li id="intro"> (d) <div class="red">
  2. 2.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span>     (a) #note (b) .big (c) span (d) p
  3. 3.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
  4. 4.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p>     (a) .box (b) .star (c) #box (d) #end
  5. 5.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div>     (a) span (b) .hero (c) .note (d) #hero
  6. 6.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
  7. 7.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
  8. 8.True or false: #logo is an id selector. (a) False (b) True
  9. 9.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
  10. 10.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
  11. 11.🎯 Which element does the selector p style? (a) <h2 class="box"> (b) <li id="intro"> (c) <h1> (d) <p class="box">
  12. 12.True or false: img is an id selector. (a) True (b) False
  13. 13.True or false: .menu is a class selector. (a) False (b) True
  14. 14.True or false: .star is an id selector. (a) False (b) True
  15. 15.True or false: li is an id selector. (a) True (b) False
  16. 16.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
  17. 17.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
  18. 18.True or false: #logo is an element selector. (a) False (b) True
  19. 19.🎯 Which element does the selector li style? (a) <li class="menu"> (b) <span class="menu"> (c) <div> (d) <p id="end">
  20. 20.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span>     (a) p (b) #box (c) #logo (d) .box
  21. 21.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
  22. 22.True or false: #main is an id selector. (a) False (b) True
  23. 23.True or false: .star is a class selector. (a) False (b) True
  24. 24.True or false: .menu is an id selector. (a) True (b) False
  25. 25.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2>     (a) .intro (b) li (c) h2 (d) #star
  26. 26.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
  27. 27.🎯 Which element does the selector .star style? (a) <h1 class="menu"> (b) <h2 class="note"> (c) <h1 id="star"> (d) <h1 class="star">
  28. 28.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2>     (a) li (b) .intro (c) #intro (d) #red
  29. 29.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="logo"> (c) <p class="star"> (d) <div class="star">
  30. 30.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p id="big"> (c) <p class="big"> (d) <p class="red">
  31. 31.True or false: p is an element selector. (a) False (b) True
  32. 32.True or false: #logo is a class selector. (a) False (b) True
  33. 33.🎯 Which CSS selector matches this element?
    <h2 class="big" id="main">Hello</h2>     (a) .main (b) li (c) .red (d) .big
  34. 34.🎯 Which element does the selector .star style? (a) <li id="star"> (b) <li class="menu"> (c) <li class="star"> (d) <div class="note">
  35. 35.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
  36. 36.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1>     (a) #main (b) h2 (c) .intro (d) .big
  37. 37.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
  38. 38.True or false: img is an element selector. (a) False (b) True
  39. 39.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p>     (a) .star (b) h1 (c) #end (d) #box
  40. 40.🎯 Which element does the selector #end style? (a) <h2 id="end"> (b) <h2 id="hero"> (c) <li class="star"> (d) <h2 class="end">

Answer key

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

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