CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 851 · 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.🎯 Can many elements share the same class? (a) No (b) Yes
2. 2.🎯 Which CSS selector matches this element?
   <span class="box" id="hero">Hello</span> (a) p (b) #hero (c) #box (d) #top
3. 3.🎯 Which CSS selector matches this element?
   <p class="box" id="main">Hello</p> (a) #box (b) .star (c) #logo (d) #main
4. 4.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
5. 5.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
6. 6.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
7. 7.🎯 Which element does the selector #top style? (a) <div class="note"> (b) <li class="top"> (c) <li id="intro"> (d) <li id="top">
8. 8.True or false: img is a class selector. (a) True (b) False
9. 9.🎯 Which CSS selector matches this element?
   <p class="menu" id="top">Hello</p> (a) .menu (b) .note (c) #menu (d) .top
10. 10.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
11. 11.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
12. 12.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="note"> (c) <h2 class="note"> (d) <span id="intro">
13. 13.🎯 Which element does the selector #main style? (a) <h1 id="logo"> (b) <h2 class="big"> (c) <h1 id="main"> (d) <h1 class="main">
14. 14.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) .red (b) #big (c) .intro (d) .big
15. 15.🎯 Which element does the selector #intro style? (a) <h1 class="big"> (b) <p class="intro"> (c) <p id="main"> (d) <p id="intro">
16. 16.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) .logo (b) h1 (c) #end (d) p
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2> (a) .box (b) .intro (c) #main (d) h2
18. 18.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
19. 19.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h1 id="intro"> (c) <h2 class="box"> (d) <h1 id="top">
20. 20.True or false: body is an element selector. (a) True (b) False
21. 21.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h1 id="big"> (c) <h2 class="box"> (d) <h1 class="red">
22. 22.🎯 Which element does the selector .star style? (a) <div id="star"> (b) <div class="menu"> (c) <div class="star"> (d) <span class="note">
23. 23.🎯 Which element does the selector span style? (a) <p> (b) <span class="box"> (c) <h2 id="logo"> (d) <h1 class="box">
24. 24.True or false: h1 is a class selector. (a) True (b) False
25. 25.True or false: .star is an id selector. (a) True (b) False
26. 26.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
27. 27.True or false: #main is an id selector. (a) False (b) True
28. 28.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) p (b) .menu (c) h1 (d) .top
29. 29.🎯 Which element does the selector #logo style? (a) <p id="end"> (b) <h1 class="big"> (c) <p class="logo"> (d) <p id="logo">
30. 30.True or false: #logo is an element selector. (a) False (b) True
31. 31.🎯 Which element does the selector .note style? (a) <div id="note"> (b) <div class="big"> (c) <span class="red"> (d) <div class="note">
32. 32.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span> (a) #star (b) #hero (c) .hero (d) p
33. 33.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
34. 34.True or false: #end is a class selector. (a) False (b) True
35. 35.🎯 Which element does the selector .box style? (a) <p id="box"> (b) <p class="box"> (c) <p class="star"> (d) <h1 class="menu">
36. 36.🎯 Which element does the selector p style? (a) <li id="top"> (b) <h1> (c) <h2 class="menu"> (d) <p class="menu">
37. 37.🎯 Which element does the selector #intro style? (a) <li class="intro"> (b) <div class="star"> (c) <li id="main"> (d) <li id="intro">
38. 38.🎯 Which element does the selector .menu style? (a) <div class="big"> (b) <li id="menu"> (c) <li class="menu"> (d) <li class="note">
39. 39.True or false: li is an element selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) div (b) #menu (c) .menu (d) .note

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