CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 890 · 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.🎯 Which element does the selector .big style? (a) <div class="big"> (b) <div id="big"> (c) <span class="box"> (d) <div class="red">
3. 3.🎯 Can many elements share the same class? (a) Yes (b) No
4. 4.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
5. 5.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
6. 6.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
7. 7.True or false: .note is an id selector. (a) True (b) False
8. 8.True or false: #hero is an element selector. (a) True (b) False
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="big" id="logo">Hello</h1> (a) #big (b) .red (c) .big (d) #end
10. 10.🎯 Which element does the selector .note style? (a) <div class="big"> (b) <span class="red"> (c) <div id="note"> (d) <div class="note">
11. 11.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
12. 12.🎯 Which element does the selector #end style? (a) <h1 class="big"> (b) <p id="end"> (c) <p class="end"> (d) <p id="hero">
13. 13.True or false: body is a class selector. (a) False (b) True
14. 14.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) .end (b) #end (c) #red (d) .box
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) h2 (b) .intro (c) #note (d) h1
16. 16.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
17. 17.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="note"> (c) <div id="hero"> (d) <li class="note">
18. 18.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) #end (b) .big (c) #big (d) div
19. 19.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) .red (b) #big (c) #top (d) .big
20. 20.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) #logo (b) .logo (c) .red (d) #big
21. 21.True or false: #main is an id selector. (a) False (b) True
22. 22.🎯 Which element does the selector li style? (a) <p id="main"> (b) <span class="star"> (c) <li class="star"> (d) <div>
23. 23.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) .logo (b) h1 (c) #red (d) .box
25. 25.🎯 Which element does the selector span style? (a) <p> (b) <span class="menu"> (c) <h2 id="intro"> (d) <h1 class="menu">
26. 26.🎯 Which element does the selector p style? (a) <h1> (b) <li id="main"> (c) <p class="red"> (d) <h2 class="red">
27. 27.🎯 Which element does the selector .menu style? (a) <h1 class="big"> (b) <p id="menu"> (c) <p class="note"> (d) <p class="menu">
28. 28.🎯 Which element does the selector .box style? (a) <h1 id="box"> (b) <h1 class="box"> (c) <h1 class="star"> (d) <h2 class="menu">
29. 29.🎯 Which element does the selector div style? (a) <p class="red"> (b) <span> (c) <div class="red"> (d) <h1 id="logo">
30. 30.True or false: .menu is a class selector. (a) True (b) False
31. 31.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
32. 32.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .end (b) div (c) #note (d) span
33. 33.True or false: #end is an id selector. (a) False (b) True
34. 34.True or false: img is a class selector. (a) True (b) False
35. 35.🎯 Which element does the selector #intro style? (a) <span class="intro"> (b) <span id="main"> (c) <span id="intro"> (d) <p class="red">
36. 36.🎯 Which element does the selector .note style? (a) <h2 class="note"> (b) <li class="red"> (c) <h2 id="note"> (d) <h2 class="big">
37. 37.🎯 Which sign starts an id selector? (a) @ (b) # (c) . (d) &
38. 38.True or false: .note is an element selector. (a) True (b) False
39. 39.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
40. 40.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) .main (b) .big (c) #logo (d) .red

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