CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 742 · 40 questions

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.

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

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