CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 210 · 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 CSS selector matches this element?
   <div class="big" id="main">Hello</div> (a) #logo (b) .big (c) #big (d) .red
2. 2.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
3. 3.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
4. 4.🎯 Which CSS selector matches this element?
   <h2 class="note" id="intro">Hello</h2> (a) .note (b) li (c) .intro (d) #note
5. 5.True or false: img is a class selector. (a) True (b) False
6. 6.🎯 Which CSS selector matches this element?
   <li class="menu" id="top">Hello</li> (a) .top (b) #intro (c) li (d) .note
7. 7.🎯 Which element does the selector #hero style? (a) <p id="top"> (b) <p class="hero"> (c) <p id="hero"> (d) <h1 class="box">
8. 8.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
9. 9.🎯 Which element does the selector #logo style? (a) <span id="end"> (b) <p class="menu"> (c) <span class="logo"> (d) <span id="logo">
10. 10.True or false: .star is a class selector. (a) True (b) False
11. 11.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
12. 12.🎯 Which element does the selector .star style? (a) <h1 class="star"> (b) <h1 id="star"> (c) <h1 class="menu"> (d) <h2 class="note">
13. 13.True or false: .card is an id selector. (a) False (b) True
14. 14.🎯 Which element does the selector .red style? (a) <p class="red"> (b) <p id="red"> (c) <p class="box"> (d) <h1 class="star">
15. 15.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
16. 16.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
17. 17.🎯 Which element does the selector #intro style? (a) <h1 class="red"> (b) <p id="main"> (c) <p class="intro"> (d) <p id="intro">
18. 18.🎯 Can many elements share the same class? (a) Yes (b) No
19. 19.🎯 Which element does the selector #hero style? (a) <h2 id="top"> (b) <h2 id="hero"> (c) <li class="note"> (d) <h2 class="hero">
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) h2 (b) h1 (c) .main (d) #box
21. 21.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="big"> (c) <h2 id="hero"> (d) <span class="big">
22. 22.🎯 Which element does the selector li style? (a) <li class="box"> (b) <p id="main"> (c) <div> (d) <span class="box">
23. 23.True or false: #main is a class selector. (a) True (b) False
24. 24.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
25. 25.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 class="note"> (c) <h1 id="note"> (d) <h1 class="big">
26. 26.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) #menu (b) .intro (c) #intro (d) #main
27. 27.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
28. 28.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) .big (b) h1 (c) .red (d) #big
29. 29.True or false: #end is a class selector. (a) False (b) True
30. 30.True or false: li is an element selector. (a) False (b) True
31. 31.True or false: h1 is an id selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <div class="star" id="end">Hello</div> (a) #hero (b) #star (c) .menu (d) .star
33. 33.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
34. 34.True or false: .big is an element selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) #big (b) .big (c) #main (d) .intro
36. 36.🎯 Which element does the selector #top style? (a) <span class="top"> (b) <span id="intro"> (c) <p class="note"> (d) <span id="top">
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) #intro (b) li (c) .top (d) #top
38. 38.🎯 Which sign starts an id selector? (a) @ (b) # (c) . (d) &
39. 39.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
40. 40.🎯 Which element does the selector li style? (a) <p id="main"> (b) <div> (c) <li class="star"> (d) <span class="star">

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