CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 216 · 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?
   <p class="big" id="top">Hello</p> (a) #intro (b) .red (c) h1 (d) p
2. 2.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
3. 3.🎯 Which CSS selector matches this element?
   <span class="menu" id="top">Hello</span> (a) p (b) #top (c) #menu (d) #intro
4. 4.🎯 Which element does the selector h2 style? (a) <li> (b) <h2 class="menu"> (c) <span id="main"> (d) <div class="menu">
5. 5.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h1 class="main"> (c) <h2 class="menu"> (d) <h1 id="logo">
6. 6.True or false: .card is a class selector. (a) False (b) True
7. 7.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="menu"> (c) <li class="menu"> (d) <div id="intro">
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="note" id="end">Hello</h1> (a) #hero (b) .big (c) h2 (d) #end
9. 9.True or false: #end is an element selector. (a) True (b) False
10. 10.True or false: .big is an id selector. (a) True (b) False
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) h1 (b) #big (c) .red (d) #intro
12. 12.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2> (a) li (b) .note (c) #intro (d) .intro
14. 14.🎯 Which element does the selector .big style? (a) <div id="big"> (b) <span class="box"> (c) <div class="red"> (d) <div class="big">
15. 15.🎯 Which element does the selector #hero style? (a) <h2 id="top"> (b) <h2 class="hero"> (c) <h2 id="hero"> (d) <li class="big">
16. 16.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
17. 17.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
18. 18.🎯 Which element does the selector #end style? (a) <h2 id="hero"> (b) <h2 id="end"> (c) <li class="box"> (d) <h2 class="end">
19. 19.True or false: img is a class selector. (a) True (b) False
20. 20.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
21. 21.True or false: .note is a class selector. (a) False (b) True
22. 22.True or false: li is a class selector. (a) False (b) True
23. 23.🎯 Can many elements share the same class? (a) Yes (b) No
24. 24.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which element does the selector #top style? (a) <div id="intro"> (b) <div class="top"> (c) <div id="top"> (d) <span class="note">
26. 26.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
27. 27.🎯 Which element does the selector .red style? (a) <h2 class="box"> (b) <h2 id="red"> (c) <li class="star"> (d) <h2 class="red">
28. 28.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
29. 29.True or false: #logo is an element selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) p (b) #big (c) .red (d) span
31. 31.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) .main (b) div (c) #logo (d) li
32. 32.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) #end (b) .big (c) span (d) #logo
33. 33.🎯 Which element does the selector .star style? (a) <p class="menu"> (b) <p id="star"> (c) <h1 class="note"> (d) <p class="star">
34. 34.True or false: #main is a class selector. (a) True (b) False
35. 35.🎯 Which element does the selector #logo style? (a) <p id="logo"> (b) <p id="end"> (c) <h1 class="big"> (d) <p class="logo">
36. 36.True or false: img is an element selector. (a) True (b) False
37. 37.True or false: p is an element selector. (a) True (b) False
38. 38.🎯 Which element does the selector #main style? (a) <li class="main"> (b) <div class="note"> (c) <li id="main"> (d) <li id="logo">
39. 39.🎯 Which element does the selector h2 style? (a) <li> (b) <h2 class="note"> (c) <span id="end"> (d) <div class="note">
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) #big (b) h1 (c) h2 (d) #main

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