CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 348 · 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.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="box" id="main">Hello</h2> (a) h2 (b) .star (c) li (d) .main
3. 3.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <h2 class="big"> (c) <p class="big"> (d) <h1>
4. 4.True or false: .note is an id selector. (a) True (b) False
5. 5.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <span class="top"> (c) <span id="intro"> (d) <p class="big">
6. 6.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
7. 7.🎯 Which element does the selector .red style? (a) <span class="box"> (b) <span id="red"> (c) <p class="star"> (d) <span class="red">
8. 8.True or false: .card is a class selector. (a) True (b) False
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="note" id="intro">Hello</h2> (a) #note (b) #intro (c) #main (d) .intro
10. 10.🎯 Can many elements share the same class? (a) No (b) Yes
11. 11.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span> (a) #intro (b) #top (c) p (d) .top
12. 12.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="big"> (c) <h1 class="big"> (d) <div id="intro">
13. 13.True or false: .note is a class selector. (a) True (b) False
14. 14.🎯 Which element does the selector #end style? (a) <span class="note"> (b) <div id="hero"> (c) <div id="end"> (d) <div class="end">
15. 15.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="intro"> (c) <h1 class="red"> (d) <li class="red">
16. 16.🎯 Which element does the selector .star style? (a) <p class="note"> (b) <span class="menu"> (c) <span id="star"> (d) <span class="star">
17. 17.🎯 Which sign starts an id selector? (a) # (b) @ (c) . (d) &
18. 18.True or false: .menu is a class selector. (a) True (b) False
19. 19.True or false: img is an element selector. (a) False (b) True
20. 20.True or false: #top is an id selector. (a) True (b) False
21. 21.True or false: li is an id selector. (a) False (b) True
22. 22.True or false: .star is a class selector. (a) True (b) False
23. 23.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <span class="box"> (c) <div> (d) <li class="box">
24. 24.🎯 Which element does the selector span style? (a) <p> (b) <span class="star"> (c) <h1 class="star"> (d) <h2 id="intro">
25. 25.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) #hero (b) #note (c) .big (d) #end
26. 26.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
27. 27.🎯 Which element does the selector .big style? (a) <h2 class="big"> (b) <h2 id="big"> (c) <h2 class="red"> (d) <li class="box">
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) #intro (b) .star (c) h2 (d) #box
29. 29.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) div (b) .logo (c) li (d) #end
30. 30.🎯 Which element does the selector #end style? (a) <span class="end"> (b) <span id="end"> (c) <span id="hero"> (d) <p class="big">
31. 31.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) .note (b) #menu (c) p (d) .intro
32. 32.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) #main (b) .big (c) .intro (d) #big
33. 33.True or false: #top is a class selector. (a) True (b) False
34. 34.True or false: body is a class selector. (a) True (b) False
35. 35.🎯 Which element does the selector .note style? (a) <span class="red"> (b) <div class="note"> (c) <div class="big"> (d) <div id="note">
36. 36.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
37. 37.True or false: .star is an element selector. (a) True (b) False
38. 38.True or false: #main is a class selector. (a) False (b) True
39. 39.🎯 Which element does the selector .box style? (a) <div class="menu"> (b) <li class="star"> (c) <li id="box"> (d) <li class="box">
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) #main (b) li (c) #big (d) h2

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