CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 261 · 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?
   <li class="red" id="intro">Hello</li> (a) #intro (b) div (c) .box (d) .intro
2. 2.🎯 Which CSS selector matches this element?
   <div class="box" id="hero">Hello</div> (a) .box (b) #box (c) .hero (d) #top
3. 3.🎯 Which CSS selector matches this element?
   <p class="box" id="end">Hello</p> (a) #box (b) p (c) .end (d) h1
4. 4.True or false: .note is a class selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <li class="star" id="top">Hello</li> (a) .menu (b) li (c) div (d) #intro
6. 6.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
7. 7.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
8. 8.True or false: #logo is an element selector. (a) True (b) False
9. 9.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
10. 10.True or false: .big is an id selector. (a) True (b) False
11. 11.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
12. 12.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
13. 13.True or false: .menu is an id selector. (a) False (b) True
14. 14.True or false: .card is a class selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) #intro (b) .intro (c) p (d) #main
16. 16.🎯 Which element does the selector #intro style? (a) <span class="intro"> (b) <span id="intro"> (c) <p class="big"> (d) <span id="main">
17. 17.True or false: .star is an element selector. (a) False (b) True
18. 18.🎯 Which element does the selector li style? (a) <p id="end"> (b) <li class="box"> (c) <div> (d) <span class="box">
19. 19.🎯 Can many elements share the same class? (a) No (b) Yes
20. 20.🎯 Which element does the selector .star style? (a) <div class="menu"> (b) <div id="star"> (c) <div class="star"> (d) <span class="note">
21. 21.🎯 Which element does the selector h2 style? (a) <h2 class="star"> (b) <span id="end"> (c) <div class="star"> (d) <li>
22. 22.🎯 Which element does the selector h2 style? (a) <span id="main"> (b) <div class="note"> (c) <li> (d) <h2 class="note">
23. 23.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="hero"> (c) <h1 class="big"> (d) <li class="big">
24. 24.True or false: #end is a class selector. (a) False (b) True
25. 25.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) .intro (b) .big (c) .red (d) #big
27. 27.🎯 Which element does the selector #main style? (a) <div class="main"> (b) <div id="main"> (c) <span class="red"> (d) <div id="logo">
28. 28.🎯 Which element does the selector p style? (a) <li id="logo"> (b) <h2 class="red"> (c) <p class="red"> (d) <h1>
29. 29.🎯 Which element does the selector #main style? (a) <h1 id="logo"> (b) <h2 class="note"> (c) <h1 class="main"> (d) <h1 id="main">
30. 30.True or false: body is a class selector. (a) True (b) False
31. 31.🎯 Which element does the selector p style? (a) <h1> (b) <li id="logo"> (c) <p class="note"> (d) <h2 class="note">
32. 32.🎯 Which CSS selector matches this element?
    <span class="star" id="end">Hello</span> (a) .star (b) .end (c) p (d) #hero
33. 33.🎯 Which element does the selector .big style? (a) <h1 class="red"> (b) <h1 class="big"> (c) <h1 id="big"> (d) <h2 class="box">
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) #main (b) .note (c) h1 (d) .intro
35. 35.🎯 Which element does the selector #intro style? (a) <h2 id="intro"> (b) <li class="menu"> (c) <h2 class="intro"> (d) <h2 id="main">
36. 36.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) p (b) #main (c) #big (d) span
37. 37.True or false: .big is a class selector. (a) False (b) True
38. 38.🎯 Which element does the selector .note style? (a) <div class="note"> (b) <span class="red"> (c) <div id="note"> (d) <div class="big">
39. 39.True or false: #end is an id selector. (a) True (b) False
40. 40.True or false: .menu is a class selector. (a) True (b) False

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