CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 690 · 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) Yes (b) No
2. 2.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
3. 3.🎯 Which CSS selector matches this element?
   <li class="red" id="top">Hello</li> (a) .red (b) #intro (c) div (d) .box
4. 4.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
5. 5.True or false: .big is an element selector. (a) False (b) True
6. 6.🎯 Which element does the selector .big style? (a) <div class="big"> (b) <div id="big"> (c) <div class="red"> (d) <span class="box">
7. 7.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
8. 8.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
9. 9.🎯 Which CSS selector matches this element?
   <p class="big" id="end">Hello</p> (a) #big (b) .red (c) h1 (d) .big
10. 10.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) #top (b) #menu (c) h1 (d) #intro
11. 11.🎯 Which CSS selector matches this element?
    <li class="star" id="top">Hello</li> (a) #star (b) .menu (c) .star (d) #intro
12. 12.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
13. 13.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
14. 14.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
15. 15.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span> (a) .big (b) #top (c) p (d) #note
16. 16.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) h1 (b) #box (c) #logo (d) .logo
17. 17.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
18. 18.True or false: .star is an id selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) .main (b) #logo (c) li (d) .menu
20. 20.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) #box (b) .box (c) .intro (d) .star
21. 21.True or false: #main is an element selector. (a) True (b) False
22. 22.🎯 Which element does the selector div style? (a) <h1 id="intro"> (b) <p class="box"> (c) <span> (d) <div class="box">
23. 23.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
24. 24.🎯 Which element does the selector .star style? (a) <h1 class="star"> (b) <h1 class="menu"> (c) <h1 id="star"> (d) <h2 class="note">
25. 25.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="end"> (c) <li id="logo"> (d) <div class="big">
26. 26.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
27. 27.True or false: h1 is an element selector. (a) True (b) False
28. 28.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
29. 29.🎯 Which element does the selector div style? (a) <span> (b) <div class="menu"> (c) <h1 id="main"> (d) <p class="menu">
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) h1 (b) .logo (c) h2 (d) #note
31. 31.True or false: body is an id selector. (a) True (b) False
32. 32.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
33. 33.🎯 Which element does the selector h2 style? (a) <span id="logo"> (b) <h2 class="box"> (c) <div class="box"> (d) <li>
34. 34.🎯 Which element does the selector li style? (a) <p id="intro"> (b) <div> (c) <li class="menu"> (d) <span class="menu">
35. 35.🎯 Which element does the selector li style? (a) <p id="end"> (b) <span class="note"> (c) <div> (d) <li class="note">
36. 36.🎯 Which element does the selector .red style? (a) <div id="red"> (b) <span class="star"> (c) <div class="red"> (d) <div class="box">
37. 37.🎯 Which element does the selector .menu style? (a) <p class="big"> (b) <span id="menu"> (c) <span class="note"> (d) <span class="menu">
38. 38.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) #red (b) .red (c) h1 (d) .hero
39. 39.True or false: img is an element selector. (a) True (b) False
40. 40.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="logo"> (c) <li class="box"> (d) <h1 class="box">

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