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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 958 · 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.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
  3. 3.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
  4. 4.True or false: #logo is an element selector. (a) False (b) True
  5. 5.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div>     (a) #menu (b) #intro (c) #top (d) .top
  6. 6.🎯 Which element does the selector #main style? (a) <span id="logo"> (b) <span id="main"> (c) <span class="main"> (d) <p class="big">
  7. 7.🎯 Which element does the selector #main style? (a) <h2 class="main"> (b) <h2 id="logo"> (c) <li class="box"> (d) <h2 id="main">
  8. 8.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p>     (a) p (b) h1 (c) .note (d) #end
  9. 9.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
  10. 10.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
  11. 11.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
  12. 12.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
  13. 13.True or false: #end is a class selector. (a) True (b) False
  14. 14.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li>     (a) li (b) #logo (c) #big (d) .main
  15. 15.🎯 Which element does the selector h2 style? (a) <div class="big"> (b) <li> (c) <span id="logo"> (d) <h2 class="big">
  16. 16.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
  17. 17.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2>     (a) .logo (b) #end (c) .menu (d) h2
  18. 18.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
  19. 19.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div>     (a) .box (b) .top (c) .red (d) #red
  20. 20.True or false: #hero is a class selector. (a) True (b) False
  21. 21.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span>     (a) .star (b) #star (c) .menu (d) .main
  22. 22.🎯 Which element does the selector #hero style? (a) <p class="hero"> (b) <p id="hero"> (c) <h1 class="box"> (d) <p id="top">
  23. 23.🎯 Which element does the selector #logo style? (a) <h1 class="box"> (b) <p id="logo"> (c) <p id="end"> (d) <p class="logo">
  24. 24.True or false: body is an element selector. (a) False (b) True
  25. 25.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2>     (a) #red (b) #top (c) .red (d) li
  26. 26.True or false: .menu is an element selector. (a) False (b) True
  27. 27.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div>     (a) .end (b) #hero (c) #end (d) #menu
  28. 28.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span>     (a) .intro (b) p (c) #big (d) span
  29. 29.True or false: .note is a class selector. (a) True (b) False
  30. 30.🎯 Which CSS selector matches this element?
    <h2 class="box" id="hero">Hello</h2>     (a) h2 (b) .hero (c) li (d) #box
  31. 31.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p>     (a) #main (b) #note (c) p (d) h1
  32. 32.🎯 Which element does the selector li style? (a) <div> (b) <p id="top"> (c) <span class="red"> (d) <li class="red">
  33. 33.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
  34. 34.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
  35. 35.True or false: .menu is a class selector. (a) False (b) True
  36. 36.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
  37. 37.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li>     (a) .top (b) div (c) #intro (d) #top
  38. 38.🎯 Can many elements share the same class? (a) No (b) Yes
  39. 39.True or false: h1 is an element selector. (a) False (b) True
  40. 40.🎯 Which element does the selector .menu style? (a) <p class="menu"> (b) <p class="note"> (c) <h1 class="big"> (d) <p id="menu">

Answer key

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

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