CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 243 · 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.🎯 Which element does the selector #hero style? (a) <h1 class="red"> (b) <p id="hero"> (c) <p id="top"> (d) <p class="hero">
3. 3.True or false: .menu is an id selector. (a) True (b) False
4. 4.🎯 Which element does the selector li style? (a) <p id="top"> (b) <div> (c) <span class="box"> (d) <li class="box">
5. 5.🎯 Which CSS selector matches this element?
   <div class="menu" id="intro">Hello</div> (a) #intro (b) #main (c) .note (d) .intro
6. 6.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
7. 7.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
8. 8.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
9. 9.🎯 Which CSS selector matches this element?
   <p class="red" id="logo">Hello</p> (a) h1 (b) #logo (c) #end (d) #red
10. 10.True or false: .note is an id selector. (a) True (b) False
11. 11.🎯 Which element does the selector .note style? (a) <h2 class="big"> (b) <h2 id="note"> (c) <li class="red"> (d) <h2 class="note">
12. 12.🎯 Which element does the selector .red style? (a) <p id="red"> (b) <h1 class="star"> (c) <p class="box"> (d) <p class="red">
13. 13.🎯 Which element does the selector .note style? (a) <p class="big"> (b) <h1 class="red"> (c) <p class="note"> (d) <p id="note">
14. 14.True or false: img is a class selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <h2 class="big" id="main">Hello</h2> (a) #big (b) .red (c) .main (d) h2
16. 16.🎯 Which element does the selector span style? (a) <h1 class="star"> (b) <span class="star"> (c) <h2 id="main"> (d) <p>
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) h2 (b) h1 (c) #big (d) .intro
18. 18.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) #intro (b) .big (c) .top (d) #big
19. 19.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) p (b) .menu (c) .main (d) h1
20. 20.True or false: body is an id selector. (a) True (b) False
21. 21.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
22. 22.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) span (b) #red (c) .red (d) .box
23. 23.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
24. 24.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="star" id="logo">Hello</h1> (a) #end (b) #logo (c) .logo (d) h2
26. 26.True or false: li is a class selector. (a) True (b) False
27. 27.🎯 Which element does the selector .box style? (a) <p class="star"> (b) <p class="box"> (c) <p id="box"> (d) <h1 class="menu">
28. 28.🎯 Which element does the selector span style? (a) <h2 id="hero"> (b) <span class="red"> (c) <p> (d) <h1 class="red">
29. 29.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="red"> (c) <h2 class="red"> (d) <span id="main">
30. 30.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="top"> (c) <h1 class="box"> (d) <span class="box">
31. 31.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
32. 32.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) .main (b) h1 (c) #main (d) #logo
33. 33.True or false: #top is an element selector. (a) True (b) False
34. 34.True or false: #logo is a class selector. (a) False (b) True
35. 35.True or false: body is an element selector. (a) False (b) True
36. 36.True or false: .big is an element selector. (a) True (b) False
37. 37.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) .note (b) #main (c) #menu (d) .main
39. 39.True or false: .star is an id selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) #big (b) .red (c) li (d) div

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