CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 344 · 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.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
2. 2.🎯 Which element does the selector span style? (a) <h1 class="note"> (b) <p> (c) <h2 id="hero"> (d) <span class="note">
3. 3.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
4. 4.True or false: #hero is an id selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <div class="note" id="hero">Hello</div> (a) .big (b) .note (c) .hero (d) #top
6. 6.🎯 Which element does the selector li style? (a) <span class="star"> (b) <div> (c) <li class="star"> (d) <p id="end">
7. 7.🎯 Which element does the selector #end style? (a) <p class="end"> (b) <p id="hero"> (c) <p id="end"> (d) <h1 class="menu">
8. 8.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
9. 9.True or false: #top is a class selector. (a) True (b) False
10. 10.True or false: #main is an id selector. (a) True (b) False
11. 11.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
12. 12.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) #big (b) #end (c) .big (d) .red
13. 13.🎯 Which element does the selector #hero style? (a) <div class="hero"> (b) <div id="hero"> (c) <span class="note"> (d) <div id="top">
14. 14.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
15. 15.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="big"> (c) <div id="top"> (d) <li class="big">
16. 16.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <span class="red"> (c) <p class="star"> (d) <span class="box">
17. 17.🎯 Which element does the selector div style? (a) <div class="red"> (b) <p class="red"> (c) <h1 id="hero"> (d) <span>
18. 18.True or false: .big is an id selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) p (b) .star (c) .end (d) #box
20. 20.🎯 Which element does the selector #logo style? (a) <h1 id="logo"> (b) <h1 id="end"> (c) <h1 class="logo"> (d) <h2 class="box">
21. 21.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
22. 22.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) #star (b) .end (c) .menu (d) .star
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) #hero (b) #end (c) .end (d) h2
25. 25.🎯 Which element does the selector li style? (a) <div> (b) <span class="red"> (c) <li class="red"> (d) <p id="hero">
26. 26.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
27. 27.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <li> (c) <span id="top"> (d) <h2 class="note">
28. 28.True or false: h1 is an element selector. (a) False (b) True
29. 29.🎯 Which element does the selector .red style? (a) <p class="red"> (b) <p class="box"> (c) <h1 class="star"> (d) <p id="red">
30. 30.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) p (b) span (c) #intro (d) .star
31. 31.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) #top (b) #big (c) .hero (d) .big
32. 32.🎯 Which element does the selector #hero style? (a) <span id="top"> (b) <span id="hero"> (c) <p class="big"> (d) <span class="hero">
33. 33.True or false: body is an id selector. (a) False (b) True
34. 34.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) #note (b) #intro (c) div (d) .intro
35. 35.🎯 Can many elements share the same class? (a) Yes (b) No
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) #intro (b) h2 (c) #menu (d) .note
37. 37.🎯 Which element does the selector .star style? (a) <h1 id="star"> (b) <h1 class="menu"> (c) <h1 class="star"> (d) <h2 class="note">
38. 38.🎯 Which element does the selector h1 style? (a) <h1 class="red"> (b) <h2> (c) <div id="hero"> (d) <li class="red">
39. 39.True or false: .big is a class selector. (a) True (b) False
40. 40.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector

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