CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 966 · 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.True or false: #top is an id selector. (a) False (b) True
2. 2.🎯 Which element does the selector .menu style? (a) <div class="big"> (b) <li class="menu"> (c) <li class="note"> (d) <li id="menu">
3. 3.🎯 Which element does the selector #main style? (a) <h2 id="main"> (b) <h2 class="main"> (c) <h2 id="logo"> (d) <li class="big">
4. 4.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
5. 5.🎯 Which CSS selector matches this element?
   <p class="red" id="intro">Hello</p> (a) p (b) #red (c) .intro (d) #main
6. 6.🎯 Which CSS selector matches this element?
   <span class="box" id="intro">Hello</span> (a) .star (b) #box (c) .intro (d) .box
7. 7.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="intro"> (c) <div class="note"> (d) <h2 class="note">
9. 9.🎯 Which CSS selector matches this element?
   <p class="menu" id="intro">Hello</p> (a) #menu (b) h1 (c) .note (d) p
10. 10.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 class="note"> (c) <h1 id="note"> (d) <h1 class="big">
11. 11.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) .big (b) #logo (c) .note (d) .main
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) #star (b) .menu (c) #intro (d) #top
13. 13.🎯 Can many elements share the same class? (a) Yes (b) No
14. 14.🎯 Which element does the selector #end style? (a) <div class="star"> (b) <li class="end"> (c) <li id="hero"> (d) <li id="end">
15. 15.True or false: img is an id selector. (a) False (b) True
16. 16.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) p (b) #logo (c) .logo (d) #star
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) .note (b) .big (c) h2 (d) #main
18. 18.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
19. 19.🎯 Which element does the selector #hero style? (a) <span class="note"> (b) <div id="top"> (c) <div id="hero"> (d) <div class="hero">
20. 20.🎯 Which element does the selector h1 style? (a) <li class="box"> (b) <h1 class="box"> (c) <div id="hero"> (d) <h2>
21. 21.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) .logo (b) h2 (c) li (d) #end
23. 23.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
24. 24.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
25. 25.True or false: #main is a class selector. (a) False (b) True
26. 26.🎯 Which element does the selector #top style? (a) <div class="top"> (b) <div id="intro"> (c) <span class="note"> (d) <div id="top">
27. 27.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
28. 28.True or false: .big is an element selector. (a) True (b) False
29. 29.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) #note (b) .big (c) .note (d) h1
30. 30.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
31. 31.True or false: p is an id selector. (a) False (b) True
32. 32.🎯 Which element does the selector #main style? (a) <h1 id="logo"> (b) <h1 class="main"> (c) <h2 class="note"> (d) <h1 id="main">
33. 33.True or false: li is an element selector. (a) True (b) False
34. 34.🎯 Which element does the selector h1 style? (a) <li class="big"> (b) <h2> (c) <h1 class="big"> (d) <div id="intro">
35. 35.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <p class="star"> (c) <span class="red"> (d) <span class="box">
36. 36.True or false: .big is a class selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) #big (b) .intro (c) div (d) .big
38. 38.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
39. 39.True or false: h1 is a class selector. (a) False (b) True
40. 40.🎯 Which element does the selector .box style? (a) <h2 class="star"> (b) <h2 id="box"> (c) <li class="menu"> (d) <h2 class="box">

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