CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 589 · 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?
   <h1 class="star" id="logo">Hello</h1> (a) #end (b) #star (c) #logo (d) .menu
2. 2.True or false: .big is a class selector. (a) True (b) False
3. 3.🎯 Which element does the selector #hero style? (a) <h1 class="big"> (b) <p id="top"> (c) <p id="hero"> (d) <p class="hero">
4. 4.True or false: #top is an id selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <p class="red" id="main">Hello</p> (a) .box (b) .red (c) #logo (d) #red
6. 6.True or false: #logo is an element selector. (a) True (b) False
7. 7.True or false: .star is a class selector. (a) True (b) False
8. 8.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
9. 9.True or false: .big is an id selector. (a) True (b) False
10. 10.True or false: #end is an id selector. (a) False (b) True
11. 11.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
12. 12.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
13. 13.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <h2 class="intro"> (c) <li class="big"> (d) <h2 id="intro">
14. 14.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="intro"> (c) <div class="note"> (d) <p class="note">
15. 15.True or false: p is a class selector. (a) True (b) False
16. 16.🎯 Which element does the selector .note style? (a) <span class="red"> (b) <div class="big"> (c) <div class="note"> (d) <div id="note">
17. 17.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) .big (b) #note (c) #main (d) .main
18. 18.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="red"> (c) <li id="intro"> (d) <p class="red">
19. 19.True or false: h1 is an element selector. (a) False (b) True
20. 20.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .note (b) .intro (c) div (d) .menu
21. 21.🎯 Can many elements share the same class? (a) Yes (b) No
22. 22.True or false: img is an element selector. (a) False (b) True
23. 23.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
24. 24.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
25. 25.🎯 Which element does the selector div style? (a) <span> (b) <div class="box"> (c) <h1 id="top"> (d) <p class="box">
26. 26.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
27. 27.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .note (b) .end (c) #note (d) #hero
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) li (b) .star (c) .end (d) h2
29. 29.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
30. 30.🎯 Which element does the selector .box style? (a) <h1 class="star"> (b) <h1 class="box"> (c) <h2 class="menu"> (d) <h1 id="box">
31. 31.True or false: #top is an element selector. (a) True (b) False
32. 32.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="top"> (c) <h1 class="note"> (d) <li class="note">
33. 33.🎯 Which element does the selector #top style? (a) <span class="top"> (b) <span id="intro"> (c) <p class="big"> (d) <span id="top">
34. 34.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
35. 35.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) .big (b) .top (c) #note (d) #top
37. 37.True or false: li is a class selector. (a) True (b) False
38. 38.True or false: #logo is an id selector. (a) False (b) True
39. 39.True or false: #hero is an id selector. (a) True (b) False
40. 40.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <p class="star"> (c) <h1> (d) <li id="end">

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