CSS Worksheet: Selectors Class and Id

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

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