CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 767 · 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.🎯 Which CSS selector matches this element?
   <span class="note" id="top">Hello</span> (a) .big (b) #intro (c) #note (d) span
2. 2.True or false: body is an element selector. (a) False (b) True
3. 3.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
4. 4.True or false: p is an element selector. (a) False (b) True
5. 5.🎯 Which element does the selector h2 style? (a) <h2 class="red"> (b) <span id="intro"> (c) <li> (d) <div class="red">
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="star" id="intro">Hello</h1> (a) .menu (b) #main (c) .star (d) .intro
7. 7.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
8. 8.True or false: p is a class selector. (a) False (b) True
9. 9.🎯 Can many elements share the same class? (a) Yes (b) No
10. 10.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) span (b) .box (c) .hero (d) #top
11. 11.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
12. 12.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
13. 13.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) .star (b) div (c) #logo (d) #box
14. 14.🎯 Which element does the selector #end style? (a) <div id="hero"> (b) <div id="end"> (c) <div class="end"> (d) <span class="box">
15. 15.🎯 Which element does the selector .box style? (a) <h2 class="star"> (b) <li class="menu"> (c) <h2 id="box"> (d) <h2 class="box">
16. 16.🎯 Which element does the selector #intro style? (a) <div id="main"> (b) <div class="intro"> (c) <div id="intro"> (d) <span class="note">
17. 17.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) #big (b) h1 (c) .big (d) #intro
18. 18.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
19. 19.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
20. 20.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
21. 21.True or false: li is a class selector. (a) False (b) True
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) .intro (b) .red (c) #main (d) h2
23. 23.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
24. 24.True or false: .menu is an id selector. (a) False (b) True
25. 25.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .big (b) #hero (c) div (d) .end
26. 26.True or false: body is an id selector. (a) True (b) False
27. 27.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
28. 28.True or false: #hero is an id selector. (a) True (b) False
29. 29.🎯 Which element does the selector div style? (a) <span> (b) <div class="star"> (c) <p class="star"> (d) <h1 id="end">
30. 30.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .top (b) h1 (c) #note (d) .note
31. 31.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span> (a) #menu (b) #hero (c) p (d) .note
32. 32.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) h1 (b) .logo (c) #note (d) h2
34. 34.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
35. 35.🎯 Which element does the selector .big style? (a) <p id="big"> (b) <p class="red"> (c) <h1 class="box"> (d) <p class="big">
36. 36.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <h1> (c) <li id="hero"> (d) <p class="star">
37. 37.True or false: .card is an element selector. (a) True (b) False
38. 38.True or false: #end is an element selector. (a) False (b) True
39. 39.True or false: .note is an element selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) #logo (b) .logo (c) #note (d) .big

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