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CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 804 · 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 sign starts an id selector? (a) . (b) @ (c) & (d) #
  2. 2.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
  3. 3.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1>     (a) h1 (b) #star (c) h2 (d) .hero
  4. 4.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
  5. 5.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li>     (a) .box (b) .red (c) div (d) #top
  6. 6.True or false: .menu is a class selector. (a) False (b) True
  7. 7.🎯 Which element does the selector h2 style? (a) <h2 class="menu"> (b) <div class="menu"> (c) <li> (d) <span id="intro">
  8. 8.True or false: li is an element selector. (a) False (b) True
  9. 9.True or false: #logo is an id selector. (a) True (b) False
  10. 10.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li>     (a) #intro (b) #top (c) .star (d) div
  11. 11.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p>     (a) .intro (b) p (c) #menu (d) h1
  12. 12.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
  13. 13.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
  14. 14.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span>     (a) span (b) #intro (c) #star (d) p
  15. 15.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li>     (a) .big (b) .logo (c) div (d) li
  16. 16.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1>     (a) .intro (b) h2 (c) .menu (d) #menu
  17. 17.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 id="note"> (c) <h1 class="note"> (d) <h1 class="big">
  18. 18.True or false: #main is an element selector. (a) False (b) True
  19. 19.True or false: h1 is an element selector. (a) True (b) False
  20. 20.🎯 Which element does the selector .box style? (a) <h1 class="menu"> (b) <p class="box"> (c) <p id="box"> (d) <p class="star">
  21. 21.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1>     (a) .intro (b) .red (c) .box (d) #red
  22. 22.🎯 Which element does the selector .box style? (a) <li class="box"> (b) <div class="menu"> (c) <li class="star"> (d) <li id="box">
  23. 23.🎯 Which element does the selector span style? (a) <p> (b) <span class="red"> (c) <h1 class="red"> (d) <h2 id="intro">
  24. 24.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p>     (a) .box (b) #logo (c) p (d) h1
  25. 25.🎯 Which element does the selector li style? (a) <li class="red"> (b) <div> (c) <p id="top"> (d) <span class="red">
  26. 26.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p>     (a) .top (b) p (c) .red (d) #big
  27. 27.🎯 Which element does the selector #hero style? (a) <p class="hero"> (b) <h1 class="red"> (c) <p id="hero"> (d) <p id="top">
  28. 28.🎯 Which element does the selector #intro style? (a) <p id="intro"> (b) <p id="main"> (c) <p class="intro"> (d) <h1 class="note">
  29. 29.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div>     (a) #note (b) div (c) #end (d) .big
  30. 30.True or false: .big is an element selector. (a) False (b) True
  31. 31.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
  32. 32.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
  33. 33.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2>     (a) .hero (b) #note (c) .big (d) #hero
  34. 34.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
  35. 35.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p>     (a) .logo (b) h1 (c) #big (d) .big
  36. 36.True or false: .card is an id selector. (a) False (b) True
  37. 37.True or false: h1 is a class selector. (a) True (b) False
  38. 38.🎯 Which element does the selector #end style? (a) <h1 id="hero"> (b) <h1 class="end"> (c) <h2 class="box"> (d) <h1 id="end">
  39. 39.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div>     (a) span (b) #top (c) .red (d) #hero
  40. 40.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li class="big"> (c) <li id="note"> (d) <li class="note">

Answer key

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

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