CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 773 · 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 img? (a) an id selector (b) an element selector (c) a class selector
2. 2.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="hero"> (c) <li class="star"> (d) <h1 class="star">
3. 3.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
4. 4.🎯 Which element does the selector p style? (a) <li id="logo"> (b) <p class="star"> (c) <h1> (d) <h2 class="star">
5. 5.🎯 Which element does the selector .big style? (a) <p class="big"> (b) <p id="big"> (c) <p class="red"> (d) <h1 class="box">
6. 6.True or false: body is an element selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <p class="red" id="intro">Hello</p> (a) #red (b) #intro (c) .intro (d) h1
8. 8.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
9. 9.True or false: #end is an element selector. (a) False (b) True
10. 10.🎯 Which element does the selector #top style? (a) <h2 id="top"> (b) <li class="red"> (c) <h2 class="top"> (d) <h2 id="intro">
11. 11.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) .star (b) h2 (c) #box (d) .box
13. 13.🎯 Which element does the selector #main style? (a) <h2 class="main"> (b) <h2 id="main"> (c) <h2 id="logo"> (d) <li class="note">
14. 14.🎯 Which element does the selector h1 style? (a) <div id="logo"> (b) <h2> (c) <h1 class="red"> (d) <li class="red">
15. 15.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
16. 16.🎯 Which element does the selector #end style? (a) <p id="end"> (b) <p id="hero"> (c) <p class="end"> (d) <h1 class="red">
17. 17.True or false: .star is an element selector. (a) True (b) False
18. 18.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) .end (b) span (c) #hero (d) div
19. 19.True or false: body is a class selector. (a) True (b) False
20. 20.🎯 Which element does the selector li style? (a) <span class="big"> (b) <div> (c) <p id="end"> (d) <li class="big">
21. 21.True or false: #end is an id selector. (a) True (b) False
22. 22.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <h2 id="intro"> (c) <h2 class="intro"> (d) <li class="box">
23. 23.🎯 Which element does the selector .red style? (a) <p class="red"> (b) <h1 class="star"> (c) <p class="box"> (d) <p id="red">
24. 24.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
25. 25.True or false: #end is a class selector. (a) True (b) False
26. 26.🎯 Which element does the selector .star style? (a) <h2 class="star"> (b) <li class="note"> (c) <h2 class="menu"> (d) <h2 id="star">
27. 27.🎯 Which element does the selector #intro style? (a) <h1 class="red"> (b) <p id="intro"> (c) <p class="intro"> (d) <p id="main">
28. 28.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <h2 id="logo"> (c) <h2 id="end"> (d) <li class="red">
29. 29.True or false: img is an id selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) #note (b) .big (c) .note (d) h1
31. 31.True or false: #hero is an id selector. (a) True (b) False
32. 32.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <li> (c) <div class="note"> (d) <h2 class="note">
33. 33.True or false: p is an element selector. (a) False (b) True
34. 34.True or false: .menu is a class selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) #star (b) .star (c) #intro (d) .menu
36. 36.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .top (b) #note (c) #top (d) .big
37. 37.True or false: img is an element selector. (a) False (b) True
38. 38.True or false: .big is a class selector. (a) False (b) True
39. 39.🎯 Which element does the selector #top style? (a) <span class="note"> (b) <div class="top"> (c) <div id="intro"> (d) <div id="top">
40. 40.True or false: .note is a class selector. (a) False (b) True

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