CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 84 · 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 .note? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
3. 3.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
4. 4.🎯 Which CSS selector matches this element?
   <span class="red" id="main">Hello</span> (a) #red (b) #logo (c) #main (d) .main
5. 5.🎯 Which CSS selector matches this element?
   <h2 class="big" id="hero">Hello</h2> (a) #top (b) #big (c) li (d) h2
6. 6.True or false: #main is an id selector. (a) False (b) True
7. 7.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="big"> (c) <li class="big"> (d) <div id="main">
8. 8.🎯 Which element does the selector #end style? (a) <div id="hero"> (b) <div class="end"> (c) <div id="end"> (d) <span class="star">
9. 9.🎯 Which CSS selector matches this element?
   <div class="note" id="end">Hello</div> (a) .note (b) .end (c) #hero (d) span
10. 10.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) #big (b) #hero (c) .red (d) div
11. 11.🎯 Which element does the selector #hero style? (a) <li id="hero"> (b) <li class="hero"> (c) <div class="box"> (d) <li id="top">
12. 12.🎯 Can many elements share the same class? (a) Yes (b) No
13. 13.True or false: body is an id selector. (a) False (b) True
14. 14.🎯 Which element does the selector div style? (a) <p class="box"> (b) <div class="box"> (c) <h1 id="intro"> (d) <span>
15. 15.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
16. 16.🎯 Which element does the selector li style? (a) <div> (b) <p id="main"> (c) <span class="star"> (d) <li class="star">
17. 17.🎯 Which element does the selector #top style? (a) <h1 id="intro"> (b) <h1 class="top"> (c) <h2 class="box"> (d) <h1 id="top">
18. 18.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) #red (b) #end (c) .box (d) .red
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) #main (b) h2 (c) .red (d) .intro
20. 20.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) p (b) span (c) .main (d) #star
21. 21.True or false: img is an element selector. (a) False (b) True
22. 22.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) h1 (b) #main (c) #note (d) h2
24. 24.True or false: #main is an element selector. (a) True (b) False
25. 25.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
26. 26.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
27. 27.🎯 Which element does the selector #hero style? (a) <p class="hero"> (b) <h1 class="box"> (c) <p id="hero"> (d) <p id="top">
28. 28.🎯 Which element does the selector .star style? (a) <li class="menu"> (b) <li id="star"> (c) <div class="note"> (d) <li class="star">
29. 29.🎯 Which element does the selector .note style? (a) <p class="note"> (b) <p id="note"> (c) <h1 class="red"> (d) <p class="big">
30. 30.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) #top (b) #note (c) .hero (d) span
31. 31.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
32. 32.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
33. 33.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .big (b) #top (c) #note (d) .top
34. 34.🎯 Which element does the selector .big style? (a) <h2 id="big"> (b) <li class="box"> (c) <h2 class="big"> (d) <h2 class="red">
35. 35.True or false: h1 is an element selector. (a) True (b) False
36. 36.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
37. 37.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
38. 38.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 class="big"> (c) <h1 id="note"> (d) <h1 class="note">
39. 39.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
40. 40.True or false: .menu is a class selector. (a) False (b) True

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