CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 705 · 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?
   <div class="menu" id="hero">Hello</div> (a) .note (b) .hero (c) .menu (d) #menu
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="big" id="main">Hello</h1> (a) .main (b) h1 (c) #big (d) h2
3. 3.🎯 Can many elements share the same class? (a) Yes (b) No
4. 4.True or false: #end is an id selector. (a) True (b) False
5. 5.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
6. 6.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
7. 7.🎯 Which CSS selector matches this element?
   <span class="red" id="logo">Hello</span> (a) .box (b) .logo (c) .red (d) p
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) #main (b) #intro (c) .big (d) #note
9. 9.🎯 Which CSS selector matches this element?
   <div class="note" id="intro">Hello</div> (a) #main (b) span (c) #note (d) div
10. 10.True or false: .note is a class selector. (a) False (b) True
11. 11.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <p class="menu"> (c) <p class="star"> (d) <h1 class="note">
12. 12.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) #big (b) .big (c) span (d) .top
13. 13.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) #main (b) .menu (c) .note (d) .intro
14. 14.True or false: .note is an element selector. (a) True (b) False
15. 15.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
16. 16.🎯 Which element does the selector #top style? (a) <h1 id="top"> (b) <h2 class="note"> (c) <h1 class="top"> (d) <h1 id="intro">
17. 17.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <div class="star"> (c) <li class="box"> (d) <li class="red">
18. 18.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
19. 19.True or false: p is a class selector. (a) False (b) True
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) #top (b) .hero (c) #hero (d) .star
21. 21.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
22. 22.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) .box (b) #logo (c) #end (d) h1
23. 23.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="note"> (c) <span class="note"> (d) <h2 id="top">
24. 24.🎯 Which element does the selector .menu style? (a) <h1 class="big"> (b) <p id="menu"> (c) <p class="menu"> (d) <p class="note">
25. 25.🎯 Which element does the selector #end style? (a) <span class="end"> (b) <span id="hero"> (c) <span id="end"> (d) <p class="menu">
26. 26.🎯 Which element does the selector .red style? (a) <p class="star"> (b) <span class="red"> (c) <span id="red"> (d) <span class="box">
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) #big (b) .big (c) .red (d) .top
28. 28.🎯 Which element does the selector .red style? (a) <span class="star"> (b) <div class="box"> (c) <div class="red"> (d) <div id="red">
29. 29.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) p (b) #logo (c) .menu (d) .main
30. 30.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
31. 31.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) #menu (b) div (c) #top (d) .note
32. 32.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) .big (b) .end (c) #big (d) #hero
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) .star (b) h2 (c) .logo (d) #box
34. 34.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
35. 35.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
36. 36.🎯 Which element does the selector #intro style? (a) <p id="intro"> (b) <h1 class="box"> (c) <p class="intro"> (d) <p id="main">
37. 37.True or false: .star is a class selector. (a) False (b) True
38. 38.True or false: img is an element selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) .box (b) #main (c) #intro (d) #red
40. 40.True or false: #logo is an id selector. (a) True (b) False

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