CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 817 · 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: li is an id selector. (a) True (b) False
2. 2.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <li> (c) <div class="star"> (d) <h2 class="star">
3. 3.🎯 Which element does the selector span style? (a) <h2 id="main"> (b) <p> (c) <h1 class="red"> (d) <span class="red">
4. 4.🎯 Which element does the selector p style? (a) <li id="logo"> (b) <h2 class="menu"> (c) <h1> (d) <p class="menu">
5. 5.🎯 Which CSS selector matches this element?
   <li class="big" id="logo">Hello</li> (a) #logo (b) .logo (c) .red (d) #big
6. 6.🎯 Which CSS selector matches this element?
   <p class="big" id="top">Hello</p> (a) .big (b) h1 (c) .top (d) #intro
7. 7.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 Which CSS selector matches this element?
   <div class="star" id="top">Hello</div> (a) div (b) .menu (c) span (d) #star
9. 9.🎯 Which CSS selector matches this element?
   <span class="big" id="intro">Hello</span> (a) p (b) #intro (c) #main (d) .intro
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) #star (b) .top (c) #intro (d) #top
11. 11.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
12. 12.True or false: h1 is a class selector. (a) False (b) True
13. 13.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
14. 14.True or false: .note is a class selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) div (b) #logo (c) .big (d) #note
16. 16.True or false: img is a class selector. (a) False (b) True
17. 17.🎯 Which element does the selector #top style? (a) <span class="big"> (b) <div id="top"> (c) <div id="intro"> (d) <div class="top">
18. 18.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) #logo (b) .main (c) #red (d) .red
19. 19.True or false: li is an element selector. (a) False (b) True
20. 20.True or false: #top is an id selector. (a) True (b) False
21. 21.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) .red (b) .big (c) span (d) #big
22. 22.True or false: body is an element selector. (a) True (b) False
23. 23.🎯 Which element does the selector .big style? (a) <div id="big"> (b) <div class="big"> (c) <div class="red"> (d) <span class="box">
24. 24.True or false: .card is an element selector. (a) True (b) False
25. 25.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
26. 26.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) h1 (b) #logo (c) #note (d) .big
27. 27.True or false: h1 is an element selector. (a) False (b) True
28. 28.🎯 Which element does the selector #logo style? (a) <div class="box"> (b) <li id="logo"> (c) <li id="end"> (d) <li class="logo">
29. 29.True or false: .star is an id selector. (a) False (b) True
30. 30.🎯 Can many elements share the same class? (a) Yes (b) No
31. 31.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) div (b) .red (c) .top (d) #red
32. 32.True or false: h1 is an id selector. (a) False (b) True
33. 33.🎯 Which element does the selector .menu style? (a) <h2 class="note"> (b) <h2 id="menu"> (c) <h2 class="menu"> (d) <li class="big">
34. 34.True or false: #top is a class selector. (a) True (b) False
35. 35.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
36. 36.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <h2 id="main"> (c) <li class="menu"> (d) <h2 id="intro">
37. 37.🎯 Which element does the selector #hero style? (a) <div class="big"> (b) <li id="top"> (c) <li class="hero"> (d) <li id="hero">
38. 38.🎯 Which element does the selector #top style? (a) <h1 id="top"> (b) <h1 id="intro"> (c) <h2 class="menu"> (d) <h1 class="top">
39. 39.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) h1 (b) #menu (c) .note (d) p
40. 40.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) #intro (b) h1 (c) .intro (d) #main

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