CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 352 · 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.🎯 Can many elements share the same class? (a) No (b) Yes
2. 2.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
3. 3.True or false: .card is an id selector. (a) True (b) False
4. 4.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
5. 5.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
6. 6.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
7. 7.🎯 Which element does the selector .star style? (a) <h2 id="star"> (b) <h2 class="menu"> (c) <li class="note"> (d) <h2 class="star">
8. 8.True or false: .big is a class selector. (a) False (b) True
9. 9.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
10. 10.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
11. 11.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <li class="menu"> (c) <div> (d) <span class="menu">
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) .main (b) .star (c) #main (d) li
13. 13.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
14. 14.True or false: #top is an id selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) .intro (b) p (c) .box (d) #box
16. 16.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) #note (b) h1 (c) .end (d) #end
17. 17.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <li> (c) <div class="note"> (d) <h2 class="note">
18. 18.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
19. 19.🎯 Which element does the selector #intro style? (a) <span id="intro"> (b) <span class="intro"> (c) <span id="main"> (d) <p class="red">
20. 20.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) .big (b) p (c) h1 (d) .intro
21. 21.True or false: #logo is an id selector. (a) False (b) True
22. 22.True or false: #main is an id selector. (a) False (b) True
23. 23.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) .intro (b) .big (c) p (d) .red
24. 24.True or false: #hero is an id selector. (a) False (b) True
25. 25.True or false: .card is an element selector. (a) True (b) False
26. 26.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h1 id="main"> (c) <h2 class="big"> (d) <h1 id="logo">
27. 27.True or false: .note is a class selector. (a) False (b) True
28. 28.🎯 Which element does the selector #intro style? (a) <h1 id="main"> (b) <h2 class="big"> (c) <h1 id="intro"> (d) <h1 class="intro">
29. 29.🎯 Which element does the selector .note style? (a) <p class="red"> (b) <span id="note"> (c) <span class="note"> (d) <span class="big">
30. 30.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="top"> (c) <li class="big"> (d) <h1 class="big">
31. 31.🎯 Which element does the selector span style? (a) <span class="star"> (b) <h2 id="end"> (c) <h1 class="star"> (d) <p>
32. 32.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) #hero (b) .star (c) h2 (d) #box
34. 34.🎯 Which element does the selector .star style? (a) <h1 class="menu"> (b) <h2 class="note"> (c) <h1 id="star"> (d) <h1 class="star">
35. 35.🎯 Which element does the selector .note style? (a) <h1 class="big"> (b) <h2 class="red"> (c) <h1 class="note"> (d) <h1 id="note">
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="star" id="end">Hello</h2> (a) .star (b) .menu (c) .end (d) li
37. 37.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="end"> (c) <h1 class="star"> (d) <li class="star">
38. 38.True or false: .menu is an element selector. (a) False (b) True
39. 39.🎯 Which element does the selector .note style? (a) <p id="note"> (b) <p class="big"> (c) <h1 class="red"> (d) <p class="note">
40. 40.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="intro"> (c) <div class="red"> (d) <h2 class="red">

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