CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 305 · 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?
   <p class="big" id="top">Hello</p> (a) .big (b) #intro (c) #big (d) .top
2. 2.True or false: #main is an element selector. (a) False (b) True
3. 3.🎯 Which element does the selector .note style? (a) <span class="big"> (b) <p class="red"> (c) <span id="note"> (d) <span class="note">
4. 4.🎯 Which element does the selector h1 style? (a) <div id="end"> (b) <h2> (c) <li class="big"> (d) <h1 class="big">
5. 5.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
6. 6.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <li class="red"> (c) <h2 class="intro"> (d) <h2 id="intro">
7. 7.🎯 Which CSS selector matches this element?
   <li class="menu" id="main">Hello</li> (a) .note (b) .main (c) #main (d) #menu
8. 8.🎯 Which CSS selector matches this element?
   <span class="star" id="main">Hello</span> (a) .menu (b) span (c) #star (d) .main
9. 9.🎯 Which CSS selector matches this element?
   <span class="note" id="top">Hello</span> (a) #note (b) span (c) p (d) #intro
10. 10.🎯 Which element does the selector #intro style? (a) <h2 class="red"> (b) <h1 id="main"> (c) <h1 class="intro"> (d) <h1 id="intro">
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) #intro (b) .red (c) #red (d) h2
12. 12.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) .star (b) .intro (c) #intro (d) h1
13. 13.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
14. 14.True or false: #hero is an element selector. (a) False (b) True
15. 15.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
16. 16.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
17. 17.🎯 Which element does the selector #main style? (a) <div class="red"> (b) <li class="main"> (c) <li id="logo"> (d) <li id="main">
18. 18.True or false: #hero is a class selector. (a) False (b) True
19. 19.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <span class="top"> (c) <span id="top"> (d) <p class="note">
20. 20.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) #main (b) .big (c) .note (d) #note
21. 21.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) div (b) #big (c) .hero (d) li
22. 22.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) span (b) .menu (c) .top (d) #intro
23. 23.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) #main (b) #star (c) #logo (d) .menu
25. 25.True or false: .menu is a class selector. (a) True (b) False
26. 26.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) #top (b) #intro (c) .big (d) .top
27. 27.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <li class="star"> (c) <h2 id="logo"> (d) <h2 id="end">
28. 28.True or false: .card is a class selector. (a) False (b) True
29. 29.🎯 Can many elements share the same class? (a) No (b) Yes
30. 30.🎯 Which element does the selector #intro style? (a) <li id="intro"> (b) <li class="intro"> (c) <div class="note"> (d) <li id="main">
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) #hero (b) #big (c) .red (d) h1
32. 32.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) .menu (b) .star (c) #end (d) #star
33. 33.🎯 Which CSS selector matches this element?
    <li class="star" id="top">Hello</li> (a) #top (b) #star (c) .top (d) #intro
34. 34.🎯 Which element does the selector .note style? (a) <li class="red"> (b) <h2 class="note"> (c) <h2 id="note"> (d) <h2 class="big">
35. 35.True or false: #main is an id selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span> (a) #note (b) .note (c) .big (d) .top
37. 37.True or false: .big is a class selector. (a) True (b) False
38. 38.🎯 Which element does the selector .menu style? (a) <p class="menu"> (b) <p class="note"> (c) <h1 class="big"> (d) <p id="menu">
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) #intro (b) h1 (c) h2 (d) #red
40. 40.🎯 Which element does the selector .red style? (a) <p class="star"> (b) <span id="red"> (c) <span class="box"> (d) <span class="red">

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