CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 494 · 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 sign starts a class selector? (a) # (b) & (c) . (d) @
2. 2.🎯 Can many elements share the same class? (a) Yes (b) No
3. 3.True or false: .big is a class selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <h2 class="star" id="logo">Hello</h2> (a) #end (b) h2 (c) .logo (d) li
5. 5.True or false: h1 is an element selector. (a) True (b) False
6. 6.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h1 class="red"> (c) <h2 id="end"> (d) <p>
8. 8.True or false: .menu is a class selector. (a) False (b) True
9. 9.🎯 Which element does the selector #intro style? (a) <li class="intro"> (b) <li id="main"> (c) <li id="intro"> (d) <div class="big">
10. 10.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
11. 11.True or false: .menu is an id selector. (a) True (b) False
12. 12.🎯 Which element does the selector #hero style? (a) <p id="top"> (b) <h1 class="big"> (c) <p class="hero"> (d) <p id="hero">
13. 13.🎯 Which element does the selector p style? (a) <h1> (b) <li id="intro"> (c) <h2 class="box"> (d) <p class="box">
14. 14.🎯 Which element does the selector p style? (a) <li id="top"> (b) <p class="note"> (c) <h2 class="note"> (d) <h1>
15. 15.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
16. 16.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="star"> (c) <div id="intro"> (d) <h1 class="star">
17. 17.True or false: h1 is a class selector. (a) True (b) False
18. 18.True or false: #top is a class selector. (a) True (b) False
19. 19.True or false: #main is an id selector. (a) False (b) True
20. 20.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) .logo (b) .menu (c) #end (d) .note
22. 22.🎯 Which element does the selector .box style? (a) <li id="box"> (b) <li class="star"> (c) <li class="box"> (d) <div class="menu">
23. 23.True or false: img is a class selector. (a) False (b) True
24. 24.True or false: body is an element selector. (a) False (b) True
25. 25.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) .box (b) #red (c) #main (d) #intro
26. 26.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li class="note"> (c) <li id="note"> (d) <li class="big">
27. 27.True or false: .star is an id selector. (a) False (b) True
28. 28.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
29. 29.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) #big (b) #logo (c) #end (d) .logo
30. 30.True or false: #hero is an id selector. (a) True (b) False
31. 31.🎯 Which element does the selector div style? (a) <div class="box"> (b) <p class="box"> (c) <h1 id="end"> (d) <span>
32. 32.True or false: .card is a class selector. (a) True (b) False
33. 33.True or false: img is an element selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) #red (b) h2 (c) .red (d) .box
35. 35.🎯 Which element does the selector .star style? (a) <span class="menu"> (b) <p class="note"> (c) <span class="star"> (d) <span id="star">
36. 36.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
37. 37.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
38. 38.🎯 Which element does the selector #logo style? (a) <p class="red"> (b) <span class="logo"> (c) <span id="end"> (d) <span id="logo">
39. 39.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
40. 40.🎯 Which element does the selector .menu style? (a) <div class="menu"> (b) <div class="note"> (c) <span class="big"> (d) <div id="menu">

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