CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 755 · 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 an id selector? (a) @ (b) . (c) & (d) #
2. 2.🎯 Which element does the selector p style? (a) <p class="box"> (b) <h1> (c) <h2 class="box"> (d) <li id="intro">
3. 3.🎯 Which CSS selector matches this element?
   <div class="box" id="logo">Hello</div> (a) .logo (b) .star (c) .box (d) #box
4. 4.🎯 Which element does the selector .note style? (a) <span class="note"> (b) <span id="note"> (c) <span class="big"> (d) <p class="red">
5. 5.True or false: #main is an id selector. (a) True (b) False
6. 6.🎯 Which CSS selector matches this element?
   <p class="note" id="logo">Hello</p> (a) #end (b) .note (c) h1 (d) #note
7. 7.🎯 Which element does the selector span style? (a) <h1 class="star"> (b) <span class="star"> (c) <p> (d) <h2 id="intro">
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="note" id="end">Hello</h1> (a) h2 (b) .big (c) #hero (d) h1
9. 9.🎯 Which CSS selector matches this element?
   <p class="note" id="main">Hello</p> (a) #main (b) .big (c) h1 (d) .main
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) #note (b) .big (c) .top (d) #top
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) #intro (b) .star (c) h2 (d) #top
12. 12.🎯 Can many elements share the same class? (a) Yes (b) No
13. 13.🎯 Which element does the selector .red style? (a) <h1 class="star"> (b) <p class="box"> (c) <p id="red"> (d) <p class="red">
14. 14.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) .box (b) #red (c) p (d) .intro
15. 15.🎯 Which element does the selector .box style? (a) <h1 class="star"> (b) <h1 class="box"> (c) <h1 id="box"> (d) <h2 class="menu">
16. 16.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
17. 17.True or false: #top is a class selector. (a) False (b) True
18. 18.🎯 Which element does the selector .star style? (a) <li class="menu"> (b) <div class="note"> (c) <li class="star"> (d) <li id="star">
19. 19.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
20. 20.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
21. 21.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
22. 22.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span> (a) .top (b) p (c) .note (d) .big
23. 23.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
24. 24.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) .end (b) #end (c) #hero (d) h1
25. 25.🎯 Which element does the selector #top style? (a) <p id="top"> (b) <p class="top"> (c) <p id="intro"> (d) <h1 class="note">
26. 26.🎯 Which element does the selector #end style? (a) <h2 class="end"> (b) <h2 id="end"> (c) <li class="red"> (d) <h2 id="hero">
27. 27.True or false: #end is an id selector. (a) True (b) False
28. 28.🎯 Which element does the selector .red style? (a) <h2 class="red"> (b) <h2 id="red"> (c) <li class="star"> (d) <h2 class="box">
29. 29.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
30. 30.True or false: #logo is an id selector. (a) True (b) False
31. 31.True or false: body is an id selector. (a) False (b) True
32. 32.🎯 Which element does the selector .note style? (a) <li id="note"> (b) <li class="note"> (c) <li class="big"> (d) <div class="red">
33. 33.True or false: p is an element selector. (a) True (b) False
34. 34.🎯 Which element does the selector div style? (a) <span> (b) <p class="star"> (c) <div class="star"> (d) <h1 id="hero">
35. 35.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) .logo (b) span (c) .red (d) #logo
36. 36.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p class="note"> (c) <p id="note"> (d) <p class="big">
37. 37.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
38. 38.True or false: .card is an id selector. (a) False (b) True
39. 39.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
40. 40.True or false: li is an id selector. (a) True (b) False

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