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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 438 · 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 body? (a) a class selector (b) an element selector (c) an id selector
  2. 2.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p>     (a) .logo (b) p (c) h1 (d) #note
  3. 3.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
  4. 4.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
  5. 5.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1>     (a) .box (b) .intro (c) #main (d) .star
  6. 6.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
  7. 7.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
  8. 8.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span>     (a) #top (b) #note (c) .big (d) #intro
  9. 9.True or false: .menu is an id selector. (a) True (b) False
  10. 10.True or false: body is an element selector. (a) True (b) False
  11. 11.🎯 Which sign starts an id selector? (a) @ (b) # (c) . (d) &
  12. 12.🎯 Which element does the selector #main style? (a) <li class="menu"> (b) <h2 id="logo"> (c) <h2 class="main"> (d) <h2 id="main">
  13. 13.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
  14. 14.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p>     (a) #hero (b) .red (c) #end (d) #big
  15. 15.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
  16. 16.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1>     (a) .top (b) h2 (c) #intro (d) #top
  17. 17.🎯 Which element does the selector .red style? (a) <h1 class="star"> (b) <p id="red"> (c) <p class="red"> (d) <p class="box">
  18. 18.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
  19. 19.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <p class="star"> (c) <li id="top"> (d) <h1>
  20. 20.🎯 Can many elements share the same class? (a) Yes (b) No
  21. 21.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1>     (a) .big (b) h2 (c) #big (d) .hero
  22. 22.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
  23. 23.🎯 Which CSS selector matches this element?
    <li class="star" id="end">Hello</li>     (a) .end (b) #star (c) div (d) #end
  24. 24.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span>     (a) #main (b) #box (c) p (d) .star
  25. 25.True or false: .note is a class selector. (a) False (b) True
  26. 26.🎯 Which element does the selector h2 style? (a) <span id="main"> (b) <h2 class="red"> (c) <div class="red"> (d) <li>
  27. 27.True or false: .note is an id selector. (a) False (b) True
  28. 28.🎯 Which element does the selector .note style? (a) <div class="note"> (b) <span class="red"> (c) <div id="note"> (d) <div class="big">
  29. 29.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1>     (a) .intro (b) h2 (c) #main (d) .menu
  30. 30.True or false: #logo is an element selector. (a) True (b) False
  31. 31.True or false: .big is a class selector. (a) False (b) True
  32. 32.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div>     (a) #top (b) #hero (c) span (d) #note
  33. 33.🎯 Which element does the selector p style? (a) <p class="box"> (b) <li id="intro"> (c) <h1> (d) <h2 class="box">
  34. 34.🎯 Which element does the selector .menu style? (a) <li class="note"> (b) <li id="menu"> (c) <div class="big"> (d) <li class="menu">
  35. 35.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div>     (a) #logo (b) #main (c) span (d) .main
  36. 36.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
  37. 37.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p>     (a) #logo (b) .logo (c) #big (d) h1
  38. 38.🎯 Which element does the selector span style? (a) <h2 id="end"> (b) <p> (c) <span class="red"> (d) <h1 class="red">
  39. 39.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li>     (a) .menu (b) li (c) #top (d) #star
  40. 40.True or false: .big is an id selector. (a) False (b) True

Answer key

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

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