CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 46 · 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="intro">Hello</h1> (a) #intro (b) .menu (c) #main (d) .intro
2. 2.🎯 Which CSS selector matches this element?
   <div class="star" id="hero">Hello</div> (a) span (b) .menu (c) #top (d) .star
3. 3.🎯 Which element does the selector #end style? (a) <p class="end"> (b) <p id="hero"> (c) <h1 class="box"> (d) <p id="end">
4. 4.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
5. 5.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
6. 6.True or false: #hero is an id selector. (a) True (b) False
7. 7.True or false: #main is a class selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <div class="menu" id="main">Hello</div> (a) #menu (b) .note (c) .main (d) .menu
9. 9.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
10. 10.🎯 Can many elements share the same class? (a) Yes (b) No
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) h1 (b) h2 (c) #red (d) .intro
12. 12.True or false: #main is an element selector. (a) False (b) True
13. 13.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <div class="star"> (c) <li class="red"> (d) <li class="box">
14. 14.True or false: .star is an element selector. (a) False (b) True
15. 15.🎯 Which element does the selector #intro style? (a) <div class="intro"> (b) <div id="intro"> (c) <span class="red"> (d) <div id="main">
16. 16.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) #intro (b) .top (c) h2 (d) h1
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) .big (b) .note (c) #end (d) #note
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) .end (b) #hero (c) .note (d) #end
20. 20.True or false: li is an element selector. (a) False (b) True
21. 21.🎯 Which element does the selector span style? (a) <h1 class="big"> (b) <h2 id="end"> (c) <span class="big"> (d) <p>
22. 22.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
23. 23.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
24. 24.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
25. 25.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) #note (b) .note (c) .end (d) .big
26. 26.🎯 Which element does the selector li style? (a) <span class="note"> (b) <div> (c) <p id="main"> (d) <li class="note">
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) h2 (b) .hero (c) #red (d) h1
28. 28.True or false: .menu is a class selector. (a) True (b) False
29. 29.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
30. 30.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) div (b) #box (c) .star (d) .top
31. 31.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .intro (b) div (c) .note (d) .menu
32. 32.🎯 Which element does the selector .note style? (a) <div class="big"> (b) <span class="red"> (c) <div class="note"> (d) <div id="note">
33. 33.🎯 Which element does the selector .note style? (a) <li class="big"> (b) <li class="note"> (c) <li id="note"> (d) <div class="red">
34. 34.🎯 Which element does the selector h1 style? (a) <h1 class="big"> (b) <div id="main"> (c) <h2> (d) <li class="big">
35. 35.🎯 Which element does the selector #logo style? (a) <p class="logo"> (b) <p id="end"> (c) <p id="logo"> (d) <h1 class="note">
36. 36.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) .big (b) p (c) #intro (d) #main
37. 37.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) .menu (b) .logo (c) #end (d) li
38. 38.🎯 Which element does the selector #hero style? (a) <div id="top"> (b) <div id="hero"> (c) <span class="big"> (d) <div class="hero">
39. 39.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
40. 40.🎯 Which element does the selector .big style? (a) <h2 class="box"> (b) <h1 class="red"> (c) <h1 class="big"> (d) <h1 id="big">

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