CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 1 · 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.True or false: .big is an id selector. (a) False (b) True
3. 3.True or false: #main is an id selector. (a) False (b) True
4. 4.🎯 Which element does the selector .big style? (a) <p class="red"> (b) <p class="big"> (c) <h1 class="box"> (d) <p id="big">
5. 5.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
6. 6.True or false: .card is a class selector. (a) False (b) True
7. 7.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
9. 9.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
10. 10.🎯 Which element does the selector #intro style? (a) <li class="red"> (b) <h2 id="main"> (c) <h2 class="intro"> (d) <h2 id="intro">
11. 11.True or false: .note is an id selector. (a) True (b) False
12. 12.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <h1 class="red"> (c) <h2> (d) <div id="end">
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) h2 (b) .intro (c) #main (d) li
14. 14.🎯 Which element does the selector p style? (a) <h2 class="note"> (b) <p class="note"> (c) <li id="main"> (d) <h1>
15. 15.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <li id="top"> (c) <li id="intro"> (d) <div class="note">
16. 16.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="box"> (c) <span id="top"> (d) <h2 class="box">
17. 17.🎯 Which element does the selector #top style? (a) <p class="top"> (b) <h1 class="menu"> (c) <p id="intro"> (d) <p id="top">
18. 18.True or false: .note is a class selector. (a) False (b) True
19. 19.True or false: #main is an element selector. (a) False (b) True
20. 20.True or false: img is an element selector. (a) False (b) True
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) .big (b) .red (c) h2 (d) #big
22. 22.🎯 Which element does the selector #logo style? (a) <p id="logo"> (b) <h1 class="box"> (c) <p id="end"> (d) <p class="logo">
23. 23.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
24. 24.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
25. 25.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) #menu (b) .main (c) #logo (d) #main
26. 26.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) #main (b) p (c) #note (d) h1
27. 27.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
28. 28.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) .big (b) #big (c) #top (d) .hero
29. 29.True or false: h1 is an id selector. (a) True (b) False
30. 30.True or false: .note is an element selector. (a) True (b) False
31. 31.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
32. 32.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) #top (b) #intro (c) div (d) .top
33. 33.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) .red (b) #intro (c) .top (d) p
34. 34.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <span class="box"> (c) <span class="red"> (d) <p class="star">
35. 35.True or false: .menu is an id selector. (a) True (b) False
36. 36.🎯 Which element does the selector .big style? (a) <h2 class="big"> (b) <h2 class="red"> (c) <h2 id="big"> (d) <li class="box">
37. 37.True or false: .star is an id selector. (a) True (b) False
38. 38.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #red (b) .box (c) div (d) .intro
39. 39.🎯 Which element does the selector #main style? (a) <li id="logo"> (b) <div class="menu"> (c) <li id="main"> (d) <li class="main">
40. 40.True or false: body is an id selector. (a) False (b) True

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