CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 452 · 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?
   <div class="red" id="logo">Hello</div> (a) #logo (b) .logo (c) .box (d) #red
2. 2.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
3. 3.🎯 Which element does the selector .big style? (a) <span class="big"> (b) <span id="big"> (c) <p class="box"> (d) <span class="red">
4. 4.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
5. 5.True or false: li is an id selector. (a) True (b) False
6. 6.True or false: body is an element selector. (a) False (b) True
7. 7.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <li> (c) <h2 class="note"> (d) <div class="note">
9. 9.🎯 Which CSS selector matches this element?
   <span class="big" id="hero">Hello</span> (a) .big (b) .red (c) .hero (d) #big
10. 10.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) #end (b) #red (c) .red (d) .box
11. 11.🎯 Which element does the selector #top style? (a) <h1 id="intro"> (b) <h1 id="top"> (c) <h2 class="box"> (d) <h1 class="top">
12. 12.True or false: #main is a class selector. (a) False (b) True
13. 13.🎯 Which element does the selector div style? (a) <span> (b) <p class="note"> (c) <h1 id="logo"> (d) <div class="note">
14. 14.🎯 Can many elements share the same class? (a) No (b) Yes
15. 15.True or false: #logo is an element selector. (a) True (b) False
16. 16.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) .top (b) span (c) #intro (d) .red
17. 17.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
18. 18.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
19. 19.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) #top (b) h1 (c) .top (d) #intro
20. 20.🎯 Which element does the selector .menu style? (a) <p id="menu"> (b) <p class="note"> (c) <h1 class="big"> (d) <p class="menu">
21. 21.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) #hero (b) .hero (c) div (d) #star
22. 22.True or false: .menu is an element selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <span class="star" id="end">Hello</span> (a) p (b) #star (c) .menu (d) span
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) .big (b) #end (c) .end (d) #note
25. 25.🎯 Which element does the selector #logo style? (a) <span class="logo"> (b) <p class="red"> (c) <span id="end"> (d) <span id="logo">
26. 26.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
27. 27.True or false: #top is a class selector. (a) True (b) False
28. 28.True or false: #end is a class selector. (a) True (b) False
29. 29.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p id="top"> (c) <p class="top"> (d) <h1 class="menu">
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) .red (b) #big (c) .hero (d) .big
31. 31.🎯 Which element does the selector h1 style? (a) <h1 class="red"> (b) <h2> (c) <li class="red"> (d) <div id="top">
32. 32.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) #red (b) span (c) .red (d) #logo
33. 33.True or false: .big is a class selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) #end (b) .note (c) .logo (d) .menu
35. 35.🎯 Which element does the selector div style? (a) <h1 id="intro"> (b) <p class="star"> (c) <span> (d) <div class="star">
36. 36.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
37. 37.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) #top (b) .top (c) div (d) #big
38. 38.True or false: .menu is a class selector. (a) True (b) False
39. 39.🎯 Which element does the selector #top style? (a) <div class="top"> (b) <div id="intro"> (c) <span class="note"> (d) <div id="top">
40. 40.True or false: .card is an element selector. (a) True (b) False

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