CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 757 · 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.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
3. 3.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <h2 class="box"> (c) <p class="box"> (d) <h1>
4. 4.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
5. 5.True or false: #top is an id selector. (a) True (b) False
6. 6.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
7. 7.🎯 Which element does the selector span style? (a) <span class="big"> (b) <h1 class="big"> (c) <h2 id="logo"> (d) <p>
8. 8.True or false: h1 is a class selector. (a) True (b) False
9. 9.🎯 Which element does the selector #logo style? (a) <h1 id="logo"> (b) <h1 id="end"> (c) <h1 class="logo"> (d) <h2 class="big">
10. 10.🎯 Which element does the selector h2 style? (a) <span id="hero"> (b) <div class="red"> (c) <h2 class="red"> (d) <li>
11. 11.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <span class="note"> (c) <p> (d) <h1 class="note">
12. 12.🎯 Which element does the selector .box style? (a) <li id="box"> (b) <div class="menu"> (c) <li class="box"> (d) <li class="star">
13. 13.True or false: .star is a class selector. (a) True (b) False
14. 14.🎯 Can many elements share the same class? (a) No (b) Yes
15. 15.True or false: p is a class selector. (a) True (b) False
16. 16.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
17. 17.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) .box (b) #box (c) .star (d) .main
18. 18.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) .big (b) #end (c) .logo (d) .red
19. 19.True or false: .card is a class selector. (a) True (b) False
20. 20.🎯 Which element does the selector #intro style? (a) <h1 class="note"> (b) <p id="main"> (c) <p id="intro"> (d) <p class="intro">
21. 21.🎯 Which element does the selector #intro style? (a) <li id="main"> (b) <li id="intro"> (c) <li class="intro"> (d) <div class="menu">
22. 22.True or false: .menu is a class selector. (a) False (b) True
23. 23.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
24. 24.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="hero"> (c) <div class="note"> (d) <h2 class="note">
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) #note (b) .big (c) #end (d) .note
26. 26.🎯 Which element does the selector .note style? (a) <p class="red"> (b) <span class="note"> (c) <span id="note"> (d) <span class="big">
27. 27.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h1 class="big"> (c) <h1 class="note"> (d) <h2 class="red">
28. 28.🎯 Which element does the selector #intro style? (a) <p class="note"> (b) <span id="intro"> (c) <span class="intro"> (d) <span id="main">
29. 29.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
30. 30.True or false: .big is a class selector. (a) False (b) True
31. 31.🎯 Which element does the selector .star style? (a) <li id="star"> (b) <div class="note"> (c) <li class="star"> (d) <li class="menu">
32. 32.🎯 Which element does the selector p style? (a) <h2 class="note"> (b) <li id="end"> (c) <p class="note"> (d) <h1>
33. 33.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
34. 34.🎯 Which element does the selector .star style? (a) <h2 id="star"> (b) <h2 class="star"> (c) <h2 class="menu"> (d) <li class="note">
35. 35.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) .main (b) #main (c) .red (d) h1
36. 36.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) #note (b) #end (c) .note (d) .big
37. 37.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
38. 38.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) #note (b) #main (c) .main (d) #logo
39. 39.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h2 id="hero"> (c) <p> (d) <h1 class="red">
40. 40.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p> (a) #logo (b) .note (c) .logo (d) h1

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