CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 700 · 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: .big 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: #top is an element selector. (a) False (b) True
4. 4.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="box"> (c) <div id="hero"> (d) <li class="box">
5. 5.True or false: .card is a class selector. (a) True (b) False
6. 6.🎯 Which element does the selector #top style? (a) <h1 class="big"> (b) <p class="top"> (c) <p id="intro"> (d) <p id="top">
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="note" id="main">Hello</h2> (a) .big (b) h2 (c) li (d) #logo
8. 8.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
9. 9.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="end"> (c) <li id="logo"> (d) <div class="big">
11. 11.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
12. 12.True or false: .star is an element selector. (a) False (b) True
13. 13.True or false: #hero is a class selector. (a) False (b) True
14. 14.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) #star (b) .star (c) #intro (d) h1
15. 15.🎯 Can many elements share the same class? (a) No (b) Yes
16. 16.🎯 Which element does the selector #logo style? (a) <p id="logo"> (b) <p class="logo"> (c) <p id="end"> (d) <h1 class="big">
17. 17.True or false: .star is a class selector. (a) True (b) False
18. 18.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <span class="top"> (c) <span id="intro"> (d) <p class="box">
19. 19.True or false: .star is an id selector. (a) False (b) True
20. 20.🎯 Which element does the selector .note style? (a) <h1 class="big"> (b) <h2 class="red"> (c) <h1 id="note"> (d) <h1 class="note">
21. 21.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <h2 id="intro"> (c) <h2 id="main"> (d) <li class="big">
22. 22.True or false: .note is an id selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) p (b) #main (c) .big (d) .red
24. 24.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
26. 26.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
27. 27.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) #main (b) #intro (c) .intro (d) p
28. 28.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="menu"> (c) <h1 class="menu"> (d) <div id="main">
29. 29.True or false: #logo is an element selector. (a) True (b) False
30. 30.True or false: #logo is an id selector. (a) False (b) True
31. 31.True or false: h1 is an id selector. (a) False (b) True
32. 32.🎯 Which element does the selector #hero style? (a) <li class="big"> (b) <h2 class="hero"> (c) <h2 id="hero"> (d) <h2 id="top">
33. 33.True or false: .card is an id selector. (a) True (b) False
34. 34.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
35. 35.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) #top (b) .hero (c) #menu (d) .menu
36. 36.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
37. 37.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) .intro (b) #red (c) .red (d) .box
38. 38.True or false: img is an id selector. (a) True (b) False
39. 39.🎯 Which element does the selector .big style? (a) <li id="big"> (b) <li class="big"> (c) <li class="red"> (d) <div class="box">
40. 40.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) #logo (b) .main (c) .note (d) span

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