CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 139 · 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.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="note" id="main">Hello</h1> (a) #note (b) h2 (c) h1 (d) .main
3. 3.🎯 Which sign starts an id selector? (a) # (b) & (c) . (d) @
4. 4.🎯 Which element does the selector #hero style? (a) <li id="top"> (b) <div class="red"> (c) <li class="hero"> (d) <li id="hero">
5. 5.True or false: .note is a class selector. (a) True (b) False
6. 6.🎯 Which element does the selector span style? (a) <h2 id="intro"> (b) <h1 class="box"> (c) <span class="box"> (d) <p>
7. 7.🎯 Can many elements share the same class? (a) Yes (b) No
8. 8.🎯 Which element does the selector h2 style? (a) <div class="big"> (b) <li> (c) <span id="end"> (d) <h2 class="big">
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) #main (b) #note (c) h2 (d) h1
10. 10.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #intro (b) .big (c) .note (d) #note
11. 11.True or false: #main is an element selector. (a) False (b) True
12. 12.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
13. 13.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
14. 14.True or false: #hero is an element selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) div (b) .red (c) #big (d) span
16. 16.🎯 Which element does the selector .red style? (a) <h1 id="red"> (b) <h2 class="star"> (c) <h1 class="box"> (d) <h1 class="red">
17. 17.🎯 Which element does the selector p style? (a) <li id="top"> (b) <p class="star"> (c) <h2 class="star"> (d) <h1>
18. 18.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <h2 id="end"> (c) <li class="big"> (d) <h2 id="logo">
19. 19.True or false: li is a class selector. (a) True (b) False
20. 20.🎯 Which element does the selector #intro style? (a) <div class="intro"> (b) <div id="main"> (c) <span class="note"> (d) <div id="intro">
21. 21.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) h1 (b) .top (c) #top (d) #intro
22. 22.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
23. 23.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="menu"> (c) <div id="main"> (d) <h1 class="menu">
24. 24.True or false: .card is a class selector. (a) True (b) False
25. 25.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <h2 class="box"> (c) <li> (d) <div class="box">
26. 26.🎯 Which element does the selector .note style? (a) <span class="note"> (b) <p class="red"> (c) <span class="big"> (d) <span id="note">
27. 27.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="top"> (c) <h1 class="note"> (d) <li class="note">
28. 28.🎯 Which CSS selector matches this element?
    <div class="star" id="end">Hello</div> (a) .menu (b) .star (c) .end (d) span
29. 29.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
30. 30.🎯 Which CSS selector matches this element?
    <li class="star" id="end">Hello</li> (a) li (b) .end (c) #star (d) #hero
31. 31.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) #hero (b) p (c) .big (d) .hero
32. 32.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
33. 33.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) #star (b) div (c) .hero (d) .menu
34. 34.🎯 Which element does the selector .menu style? (a) <h1 class="note"> (b) <h2 class="big"> (c) <h1 id="menu"> (d) <h1 class="menu">
35. 35.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) #red (b) .logo (c) p (d) .red
36. 36.🎯 Which element does the selector .box style? (a) <h1 id="box"> (b) <h1 class="star"> (c) <h2 class="menu"> (d) <h1 class="box">
37. 37.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2> (a) .red (b) .logo (c) li (d) #red
39. 39.True or false: li is an element selector. (a) False (b) True
40. 40.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5

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