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CSS Worksheet: Selectors Class and Id

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

Answer key

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

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