CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 635 · 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.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
3. 3.🎯 Can many elements share the same class? (a) No (b) Yes
4. 4.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
5. 5.True or false: .menu is a class selector. (a) True (b) False
6. 6.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
7. 7.True or false: img is an element selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <span class="note" id="top">Hello</span> (a) .top (b) #intro (c) p (d) #top
9. 9.🎯 Which CSS selector matches this element?
   <p class="big" id="main">Hello</p> (a) #big (b) h1 (c) .big (d) #logo
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="star" id="main">Hello</h2> (a) .menu (b) li (c) .star (d) #star
11. 11.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) .red (b) #end (c) #hero (d) #big
12. 12.🎯 Which element does the selector #intro style? (a) <div class="intro"> (b) <span class="big"> (c) <div id="intro"> (d) <div id="main">
13. 13.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) #top (b) .note (c) h1 (d) #hero
14. 14.True or false: .menu is an id selector. (a) True (b) False
15. 15.🎯 Which element does the selector .big style? (a) <p class="red"> (b) <p class="big"> (c) <p id="big"> (d) <h1 class="box">
16. 16.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <div class="big"> (c) <h2 class="big"> (d) <li>
17. 17.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
18. 18.True or false: .note is an element selector. (a) True (b) False
19. 19.True or false: #main is a class selector. (a) False (b) True
20. 20.🎯 Which element does the selector .note style? (a) <span id="note"> (b) <span class="big"> (c) <p class="red"> (d) <span class="note">
21. 21.🎯 Which sign starts a class selector? (a) . (b) & (c) @ (d) #
22. 22.True or false: body is a class selector. (a) False (b) True
23. 23.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
24. 24.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) .intro (b) #intro (c) #menu (d) .note
25. 25.🎯 Which element does the selector #top style? (a) <h1 id="intro"> (b) <h1 class="top"> (c) <h2 class="note"> (d) <h1 id="top">
26. 26.🎯 Which element does the selector .big style? (a) <h2 id="big"> (b) <h2 class="big"> (c) <h2 class="red"> (d) <li class="box">
27. 27.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) span (b) .note (c) .hero (d) #note
28. 28.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) #intro (b) .star (c) #box (d) .box
29. 29.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
30. 30.🎯 Which element does the selector #top style? (a) <span class="top"> (b) <span id="top"> (c) <p class="red"> (d) <span id="intro">
31. 31.True or false: #hero is a class selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) #intro (b) h2 (c) #menu (d) .note
33. 33.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
34. 34.🎯 Which element does the selector #intro style? (a) <h2 class="box"> (b) <h1 id="main"> (c) <h1 class="intro"> (d) <h1 id="intro">
35. 35.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) #main (b) h1 (c) #intro (d) #red
36. 36.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) .end (b) .big (c) #big (d) .red
37. 37.🎯 Which element does the selector .menu style? (a) <li id="menu"> (b) <li class="menu"> (c) <li class="note"> (d) <div class="big">
38. 38.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) span (b) #star (c) .menu (d) .top
39. 39.True or false: .star is a class selector. (a) True (b) False
40. 40.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p id="top"> (c) <p class="top"> (d) <h1 class="menu">

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