CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 116 · 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 #main? (a) an element selector (b) an id selector (c) a class selector
2. 2.True or false: .menu is a class selector. (a) False (b) True
3. 3.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <p class="menu"> (c) <span id="top"> (d) <span class="top">
4. 4.🎯 Which CSS selector matches this element?
   <li class="big" id="main">Hello</li> (a) #main (b) div (c) .main (d) #big
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="big" id="hero">Hello</h1> (a) h2 (b) .big (c) .hero (d) .red
6. 6.True or false: body is an element selector. (a) True (b) False
7. 7.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
8. 8.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) 5 (d) any number
9. 9.🎯 Which CSS selector matches this element?
   <span class="menu" id="intro">Hello</span> (a) #menu (b) p (c) span (d) .intro
10. 10.True or false: .card is an id selector. (a) False (b) True
11. 11.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
12. 12.🎯 Which element does the selector p style? (a) <p class="box"> (b) <h2 class="box"> (c) <h1> (d) <li id="hero">
13. 13.🎯 Can many elements share the same class? (a) Yes (b) No
14. 14.True or false: body is a class selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) .red (b) #big (c) #intro (d) #top
16. 16.🎯 Which sign starts a class selector? (a) & (b) @ (c) . (d) #
17. 17.True or false: #logo is an id selector. (a) False (b) True
18. 18.True or false: h1 is an element selector. (a) False (b) True
19. 19.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
20. 20.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) #logo (b) #big (c) .main (d) span
21. 21.True or false: #hero is an element selector. (a) True (b) False
22. 22.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
23. 23.🎯 Which element does the selector #logo style? (a) <h2 class="menu"> (b) <h1 class="logo"> (c) <h1 id="end"> (d) <h1 id="logo">
24. 24.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
26. 26.🎯 Which element does the selector li style? (a) <p id="end"> (b) <li class="big"> (c) <span class="big"> (d) <div>
27. 27.🎯 Which CSS selector matches this element?
    <li class="box" id="end">Hello</li> (a) #hero (b) div (c) .end (d) .box
28. 28.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) .red (b) #logo (c) .main (d) #main
29. 29.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
30. 30.🎯 Which element does the selector #end style? (a) <p class="end"> (b) <p id="hero"> (c) <h1 class="note"> (d) <p id="end">
31. 31.🎯 Which element does the selector li style? (a) <span class="box"> (b) <div> (c) <li class="box"> (d) <p id="end">
32. 32.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) div (b) #end (c) .box (d) .red
33. 33.True or false: .star is an id selector. (a) True (b) False
34. 34.🎯 Which element does the selector .star style? (a) <h2 id="star"> (b) <li class="note"> (c) <h2 class="menu"> (d) <h2 class="star">
35. 35.True or false: img is a class selector. (a) True (b) False
36. 36.🎯 Which element does the selector #top style? (a) <div class="red"> (b) <li class="top"> (c) <li id="intro"> (d) <li id="top">
37. 37.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
38. 38.🎯 Which element does the selector div style? (a) <p class="star"> (b) <span> (c) <h1 id="hero"> (d) <div class="star">
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) .star (b) .box (c) #box (d) .main
40. 40.True or false: #hero is an id selector. (a) True (b) False

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