CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 54 · 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 element does the selector #top style? (a) <div class="top"> (b) <div id="intro"> (c) <div id="top"> (d) <span class="big">
2. 2.🎯 Which element does the selector .note style? (a) <li class="red"> (b) <h2 class="note"> (c) <h2 id="note"> (d) <h2 class="big">
3. 3.🎯 Which element does the selector p style? (a) <p class="red"> (b) <li id="main"> (c) <h1> (d) <h2 class="red">
4. 4.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
5. 5.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
6. 6.True or false: img is an id selector. (a) False (b) True
7. 7.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
8. 8.🎯 Can many elements share the same class? (a) Yes (b) No
9. 9.🎯 Which CSS selector matches this element?
   <p class="note" id="intro">Hello</p> (a) .big (b) #intro (c) #main (d) .intro
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) li (b) #note (c) h2 (d) .logo
11. 11.True or false: .big is a class selector. (a) False (b) True
12. 12.🎯 Which element does the selector #main style? (a) <div class="box"> (b) <li id="logo"> (c) <li id="main"> (d) <li class="main">
13. 13.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="star"> (c) <li class="star"> (d) <div id="intro">
14. 14.🎯 Which element does the selector .menu style? (a) <li class="note"> (b) <li id="menu"> (c) <li class="menu"> (d) <div class="big">
15. 15.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
16. 16.True or false: #hero is an element selector. (a) False (b) True
17. 17.🎯 Which element does the selector .star style? (a) <li class="menu"> (b) <li class="star"> (c) <div class="note"> (d) <li id="star">
18. 18.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) .menu (b) #menu (c) #intro (d) span
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) .main (b) #logo (c) h2 (d) h1
20. 20.True or false: li is an id selector. (a) False (b) True
21. 21.True or false: p is an id selector. (a) True (b) False
22. 22.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h1 class="main"> (c) <h1 id="logo"> (d) <h2 class="menu">
23. 23.🎯 Which element does the selector .box style? (a) <span id="box"> (b) <span class="star"> (c) <p class="menu"> (d) <span class="box">
24. 24.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) .top (b) #big (c) .big (d) #intro
25. 25.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) .big (b) h1 (c) #big (d) .red
26. 26.🎯 Which element does the selector .box style? (a) <h1 class="box"> (b) <h2 class="menu"> (c) <h1 id="box"> (d) <h1 class="star">
27. 27.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) div (b) .end (c) .red (d) .big
28. 28.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
29. 29.True or false: .menu is an id selector. (a) True (b) False
30. 30.🎯 Which element does the selector .menu style? (a) <div class="menu"> (b) <span class="big"> (c) <div class="note"> (d) <div id="menu">
31. 31.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <div class="box"> (c) <h2 class="box"> (d) <li>
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) #logo (b) .big (c) .main (d) h2
33. 33.🎯 Which element does the selector .red style? (a) <span class="red"> (b) <span id="red"> (c) <p class="star"> (d) <span class="box">
34. 34.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) span (b) p (c) #top (d) .star
35. 35.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 id="note"> (c) <h1 class="note"> (d) <h1 class="big">
36. 36.True or false: .note is an id selector. (a) False (b) True
37. 37.🎯 Which element does the selector .star style? (a) <div class="star"> (b) <div id="star"> (c) <span class="note"> (d) <div class="menu">
38. 38.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) p (b) #top (c) .hero (d) #hero
39. 39.True or false: .star is an element selector. (a) False (b) True
40. 40.True or false: #top is an id selector. (a) False (b) True

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