CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 811 · 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: p is an element selector. (a) True (b) False
2. 2.🎯 Which element does the selector .menu style? (a) <span class="big"> (b) <div id="menu"> (c) <div class="menu"> (d) <div class="note">
3. 3.True or false: .star is an id selector. (a) False (b) True
4. 4.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
5. 5.🎯 Which CSS selector matches this element?
   <div class="star" id="hero">Hello</div> (a) div (b) #top (c) #star (d) .hero
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="note" id="logo">Hello</h2> (a) li (b) #end (c) .logo (d) #logo
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="big" id="hero">Hello</h1> (a) .big (b) #top (c) .hero (d) .red
8. 8.True or false: li is an element selector. (a) True (b) False
9. 9.🎯 Which element does the selector #hero style? (a) <div class="hero"> (b) <div id="hero"> (c) <span class="big"> (d) <div id="top">
10. 10.🎯 Which element does the selector .note style? (a) <li class="note"> (b) <li id="note"> (c) <div class="red"> (d) <li class="big">
11. 11.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
12. 12.🎯 Can many elements share the same class? (a) No (b) Yes
13. 13.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
14. 14.True or false: p is a class selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span> (a) .big (b) .top (c) #note (d) span
16. 16.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h2 class="box"> (c) <h1 class="hero"> (d) <h1 id="top">
17. 17.True or false: #top is a class selector. (a) True (b) False
18. 18.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
19. 19.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) span (b) .star (c) div (d) #box
20. 20.🎯 Which element does the selector .star style? (a) <li id="star"> (b) <li class="menu"> (c) <div class="note"> (d) <li class="star">
21. 21.🎯 Which sign starts a class selector? (a) & (b) @ (c) . (d) #
22. 22.🎯 Which element does the selector #main style? (a) <span class="main"> (b) <span id="main"> (c) <p class="note"> (d) <span id="logo">
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) .top (b) #box (c) h1 (d) .star
24. 24.🎯 Which element does the selector li style? (a) <span class="star"> (b) <p id="logo"> (c) <li class="star"> (d) <div>
25. 25.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) .menu (b) #star (c) #main (d) h1
26. 26.🎯 Which element does the selector #top style? (a) <h2 id="top"> (b) <h2 class="top"> (c) <h2 id="intro"> (d) <li class="big">
27. 27.True or false: .card is a class selector. (a) False (b) True
28. 28.True or false: h1 is an element selector. (a) True (b) False
29. 29.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
30. 30.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) span (b) div (c) #red (d) .end
31. 31.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) #big (b) .top (c) #intro (d) div
32. 32.True or false: img is an element selector. (a) True (b) False
33. 33.True or false: #end is an element selector. (a) True (b) False
34. 34.True or false: #hero is a class selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <div class="star" id="end">Hello</div> (a) div (b) span (c) .menu (d) #star
36. 36.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) span (b) #red (c) p (d) .box
37. 37.True or false: .note is an id selector. (a) True (b) False
38. 38.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
39. 39.🎯 Which element does the selector .red style? (a) <li class="box"> (b) <div class="star"> (c) <li id="red"> (d) <li class="red">
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) #intro (b) #menu (c) h2 (d) .note

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