CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 732 · 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: body is an id selector. (a) True (b) False
2. 2.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <p class="star"> (c) <li id="end"> (d) <h1>
3. 3.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
4. 4.True or false: #logo is an id selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <p class="box" id="end">Hello</p> (a) #hero (b) #box (c) h1 (d) p
6. 6.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
7. 7.True or false: .note is a class selector. (a) False (b) True
8. 8.🎯 Can many elements share the same class? (a) Yes (b) No
9. 9.🎯 Which element does the selector #top style? (a) <h2 id="intro"> (b) <h2 id="top"> (c) <h2 class="top"> (d) <li class="note">
10. 10.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
11. 11.True or false: .star is a class selector. (a) True (b) False
12. 12.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) #logo (b) .menu (c) #star (d) .star
13. 13.True or false: #end is a class selector. (a) False (b) True
14. 14.True or false: #top is an id selector. (a) False (b) True
15. 15.True or false: .note is an id selector. (a) False (b) True
16. 16.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
17. 17.🎯 Which element does the selector .big style? (a) <h2 class="box"> (b) <h1 class="red"> (c) <h1 class="big"> (d) <h1 id="big">
18. 18.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
19. 19.True or false: .big is a class selector. (a) True (b) False
20. 20.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) .star (b) li (c) #main (d) div
21. 21.True or false: #main is an id selector. (a) True (b) False
22. 22.True or false: #hero is an id selector. (a) False (b) True
23. 23.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) #top (b) #big (c) .red (d) .top
25. 25.🎯 Which element does the selector #hero style? (a) <span class="star"> (b) <div id="hero"> (c) <div id="top"> (d) <div class="hero">
26. 26.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) p (b) #big (c) .main (d) h1
27. 27.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
28. 28.🎯 Which element does the selector span style? (a) <span class="box"> (b) <p> (c) <h2 id="main"> (d) <h1 class="box">
29. 29.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) .box (b) #box (c) #main (d) .intro
30. 30.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
31. 31.True or false: img is an id selector. (a) False (b) True
32. 32.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) #intro (b) h2 (c) h1 (d) #box
34. 34.True or false: .card is a class selector. (a) True (b) False
35. 35.True or false: h1 is a class selector. (a) True (b) False
36. 36.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1> (a) .star (b) #logo (c) #box (d) h2
38. 38.True or false: .note is an element selector. (a) False (b) True
39. 39.🎯 Which element does the selector #hero style? (a) <p class="big"> (b) <span id="top"> (c) <span class="hero"> (d) <span id="hero">
40. 40.🎯 Which element does the selector #main style? (a) <li class="main"> (b) <li id="logo"> (c) <div class="big"> (d) <li id="main">

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