CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 565 · 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.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
2. 2.True or false: .note is an element selector. (a) False (b) True
3. 3.🎯 Which CSS selector matches this element?
   <span class="red" id="intro">Hello</span> (a) .intro (b) .box (c) #main (d) #intro
4. 4.🎯 Which CSS selector matches this element?
   <p class="big" id="hero">Hello</p> (a) #big (b) .hero (c) p (d) #top
5. 5.🎯 Which CSS selector matches this element?
   <li class="note" id="top">Hello</li> (a) div (b) .top (c) #top (d) .big
6. 6.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
7. 7.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="star" id="main">Hello</h2> (a) .main (b) .menu (c) #logo (d) h2
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="note" id="intro">Hello</h2> (a) #main (b) #intro (c) .big (d) #note
10. 10.True or false: .star is a class selector. (a) True (b) False
11. 11.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
12. 12.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
13. 13.🎯 Which element does the selector div style? (a) <div class="red"> (b) <span> (c) <h1 id="hero"> (d) <p class="red">
14. 14.True or false: .big is an id selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) #note (b) .intro (c) .note (d) #main
16. 16.🎯 Which element does the selector .box style? (a) <li class="box"> (b) <div class="menu"> (c) <li id="box"> (d) <li class="star">
17. 17.🎯 Which element does the selector .star style? (a) <h1 id="star"> (b) <h2 class="note"> (c) <h1 class="menu"> (d) <h1 class="star">
18. 18.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
19. 19.🎯 Which element does the selector div style? (a) <p class="big"> (b) <h1 id="end"> (c) <span> (d) <div class="big">
20. 20.True or false: body is an id selector. (a) False (b) True
21. 21.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 Which element does the selector div style? (a) <h1 id="main"> (b) <div class="note"> (c) <span> (d) <p class="note">
23. 23.True or false: h1 is an id selector. (a) True (b) False
24. 24.True or false: #logo is an id selector. (a) True (b) False
25. 25.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <span id="intro"> (c) <p class="big"> (d) <span class="top">
26. 26.🎯 Which sign starts an id selector? (a) # (b) & (c) @ (d) .
27. 27.🎯 Which element does the selector .note style? (a) <span class="red"> (b) <div class="big"> (c) <div class="note"> (d) <div id="note">
28. 28.🎯 Which element does the selector span style? (a) <h1 class="star"> (b) <h2 id="hero"> (c) <p> (d) <span class="star">
29. 29.True or false: .card is an element selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) .box (b) .star (c) #box (d) #main
31. 31.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="end"> (c) <h2 class="note"> (d) <div class="note">
32. 32.🎯 Which element does the selector #main style? (a) <span id="main"> (b) <span class="main"> (c) <p class="note"> (d) <span id="logo">
33. 33.True or false: .big is an element selector. (a) False (b) True
34. 34.True or false: .card is an id selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) p (b) .end (c) #box (d) span
36. 36.True or false: #hero is an element selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) .intro (b) #main (c) #big (d) #intro
38. 38.🎯 Which element does the selector .big style? (a) <div class="box"> (b) <li class="red"> (c) <li id="big"> (d) <li class="big">
39. 39.True or false: .menu is an id selector. (a) True (b) False
40. 40.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector

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