CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 227 · 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: #main is a class selector. (a) False (b) True
2. 2.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
3. 3.True or false: li is an element selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <p class="menu" id="top">Hello</p> (a) #intro (b) .top (c) #top (d) #menu
5. 5.🎯 Which CSS selector matches this element?
   <h2 class="star" id="intro">Hello</h2> (a) li (b) .intro (c) .menu (d) h2
6. 6.🎯 Which element does the selector #end style? (a) <h1 id="end"> (b) <h1 class="end"> (c) <h1 id="hero"> (d) <h2 class="note">
7. 7.True or false: .note is an element selector. (a) True (b) False
8. 8.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <li class="menu"> (c) <h1 class="menu"> (d) <h2>
9. 9.🎯 Which CSS selector matches this element?
   <li class="big" id="end">Hello</li> (a) div (b) li (c) #big (d) .red
10. 10.True or false: .card is a class selector. (a) True (b) False
11. 11.True or false: #main is an element selector. (a) True (b) False
12. 12.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
13. 13.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) #end (b) .big (c) #note (d) #logo
15. 15.🎯 Can many elements share the same class? (a) Yes (b) No
16. 16.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
17. 17.True or false: #logo is an element selector. (a) True (b) False
18. 18.🎯 Which element does the selector #end style? (a) <h2 class="end"> (b) <h2 id="hero"> (c) <li class="star"> (d) <h2 id="end">
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) #hero (b) .end (c) #note (d) .note
20. 20.🎯 Which element does the selector .menu style? (a) <li class="menu"> (b) <li class="note"> (c) <li id="menu"> (d) <div class="big">
21. 21.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
22. 22.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
23. 23.True or false: .star is a class selector. (a) False (b) True
24. 24.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
25. 25.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
26. 26.True or false: p is an id selector. (a) False (b) True
27. 27.🎯 Which element does the selector .note style? (a) <span id="note"> (b) <span class="note"> (c) <span class="big"> (d) <p class="red">
28. 28.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) li (b) #hero (c) #top (d) #note
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) #note (b) #logo (c) #end (d) .big
31. 31.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) #top (b) .menu (c) #star (d) .star
32. 32.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) #menu (b) .main (c) .menu (d) div
33. 33.True or false: .note is an id selector. (a) False (b) True
34. 34.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
35. 35.True or false: p is an element selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) .note (b) .intro (c) .big (d) #note
37. 37.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) h1 (b) .end (c) #hero (d) #end
38. 38.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
39. 39.🎯 Which element does the selector #logo style? (a) <span id="logo"> (b) <p class="note"> (c) <span class="logo"> (d) <span id="end">
40. 40.True or false: #hero is an element selector. (a) False (b) True

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