CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 331 · 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.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
3. 3.🎯 Which element does the selector #end style? (a) <p class="end"> (b) <h1 class="menu"> (c) <p id="end"> (d) <p id="hero">
4. 4.🎯 Which element does the selector #hero style? (a) <li id="hero"> (b) <div class="box"> (c) <li id="top"> (d) <li class="hero">
5. 5.🎯 Which element does the selector #hero style? (a) <div id="top"> (b) <div class="hero"> (c) <span class="big"> (d) <div id="hero">
6. 6.🎯 Which CSS selector matches this element?
   <li class="red" id="intro">Hello</li> (a) .intro (b) #red (c) #main (d) .red
7. 7.🎯 Which element does the selector .star style? (a) <p class="menu"> (b) <p class="star"> (c) <h1 class="note"> (d) <p id="star">
8. 8.True or false: #hero is an id selector. (a) False (b) True
9. 9.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <li> (c) <h2 class="box"> (d) <div class="box">
10. 10.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
11. 11.🎯 Which element does the selector .big style? (a) <li class="big"> (b) <div class="box"> (c) <li id="big"> (d) <li class="red">
12. 12.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) .note (b) .big (c) div (d) #top
13. 13.True or false: .note is a class selector. (a) False (b) True
14. 14.True or false: .card is an id selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) .box (b) .top (c) #red (d) #top
16. 16.🎯 Which element does the selector .box style? (a) <h2 class="menu"> (b) <h1 id="box"> (c) <h1 class="box"> (d) <h1 class="star">
17. 17.🎯 Which element does the selector #end style? (a) <h1 class="end"> (b) <h2 class="red"> (c) <h1 id="hero"> (d) <h1 id="end">
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1> (a) .star (b) .logo (c) #box (d) h1
19. 19.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
20. 20.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="big"> (c) <h2 class="big"> (d) <span id="top">
21. 21.🎯 Which element does the selector .note style? (a) <span class="big"> (b) <p class="red"> (c) <span id="note"> (d) <span class="note">
22. 22.True or false: img is an id selector. (a) True (b) False
23. 23.🎯 Which element does the selector li style? (a) <div> (b) <p id="top"> (c) <li class="big"> (d) <span class="big">
24. 24.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) p (b) .main (c) #logo (d) .star
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) h2 (b) .note (c) .big (d) #intro
26. 26.True or false: li is an element selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) #note (b) .hero (c) li (d) h2
28. 28.True or false: .note is an element selector. (a) False (b) True
29. 29.True or false: #top is a class selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) h1 (b) p (c) #note (d) .end
31. 31.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) .hero (b) div (c) span (d) .star
32. 32.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
33. 33.🎯 Which CSS selector matches this element?
    <p class="star" id="logo">Hello</p> (a) #star (b) .menu (c) .star (d) #end
34. 34.True or false: h1 is an id selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) #intro (b) .red (c) #big (d) #main
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) .intro (b) #main (c) .star (d) h2
37. 37.True or false: .menu is an id selector. (a) True (b) False
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) #big (b) h2 (c) h1 (d) #hero
39. 39.🎯 Which element does the selector #top style? (a) <h2 class="big"> (b) <h1 id="intro"> (c) <h1 id="top"> (d) <h1 class="top">
40. 40.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector

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