CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 242 · 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.🎯 Can many elements share the same class? (a) Yes (b) No
2. 2.🎯 Which CSS selector matches this element?
   <div class="star" id="hero">Hello</div> (a) .menu (b) #top (c) .hero (d) .star
3. 3.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
4. 4.True or false: li is a class selector. (a) False (b) True
5. 5.🎯 Which element does the selector .box style? (a) <h1 class="box"> (b) <h1 id="box"> (c) <h2 class="menu"> (d) <h1 class="star">
6. 6.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h2 class="box"> (c) <h1 class="red"> (d) <h1 id="big">
7. 7.True or false: #top is a class selector. (a) False (b) True
8. 8.🎯 Which element does the selector h2 style? (a) <li> (b) <h2 class="note"> (c) <div class="note"> (d) <span id="top">
9. 9.🎯 Which CSS selector matches this element?
   <li class="red" id="hero">Hello</li> (a) #red (b) div (c) .hero (d) .red
10. 10.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
11. 11.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) .red (b) #big (c) .hero (d) li
12. 12.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) .top (b) span (c) #note (d) #top
13. 13.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
14. 14.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <p> (c) <span class="box"> (d) <h2 id="hero">
15. 15.🎯 Which element does the selector .note style? (a) <h1 class="note"> (b) <h1 class="big"> (c) <h2 class="red"> (d) <h1 id="note">
16. 16.🎯 Which element does the selector .menu style? (a) <span class="big"> (b) <div class="note"> (c) <div class="menu"> (d) <div id="menu">
17. 17.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
18. 18.True or false: body is an element selector. (a) True (b) False
19. 19.True or false: li is an element selector. (a) False (b) True
20. 20.🎯 Which element does the selector li style? (a) <div> (b) <span class="big"> (c) <li class="big"> (d) <p id="intro">
21. 21.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
22. 22.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <li id="intro"> (c) <li id="top"> (d) <div class="box">
23. 23.🎯 Which element does the selector .red style? (a) <li class="box"> (b) <li id="red"> (c) <div class="star"> (d) <li class="red">
24. 24.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which element does the selector #top style? (a) <p id="top"> (b) <p id="intro"> (c) <p class="top"> (d) <h1 class="box">
26. 26.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
27. 27.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p> (a) .logo (b) h1 (c) .note (d) #logo
28. 28.🎯 Which element does the selector h1 style? (a) <div id="main"> (b) <h1 class="red"> (c) <li class="red"> (d) <h2>
29. 29.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) span (b) .note (c) #intro (d) .top
30. 30.🎯 Which element does the selector #top style? (a) <span class="note"> (b) <div id="intro"> (c) <div id="top"> (d) <div class="top">
31. 31.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span> (a) #box (b) #logo (c) .star (d) span
32. 32.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span> (a) p (b) #box (c) #main (d) #logo
33. 33.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
34. 34.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) span (b) #intro (c) .intro (d) .note
35. 35.🎯 Which element does the selector #hero style? (a) <p id="top"> (b) <p class="hero"> (c) <p id="hero"> (d) <h1 class="box">
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) .red (b) #big (c) .end (d) .big
37. 37.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
38. 38.True or false: .big is a class selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) .big (b) #note (c) #top (d) h2
40. 40.True or false: li is an id selector. (a) False (b) True

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