CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 749 · 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 #logo? (a) an id selector (b) a class selector (c) an element selector
2. 2.🎯 Which CSS selector matches this element?
   <div class="big" id="main">Hello</div> (a) #main (b) #logo (c) span (d) .red
3. 3.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
4. 4.🎯 Which element does the selector #end style? (a) <p class="red"> (b) <span class="end"> (c) <span id="hero"> (d) <span id="end">
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="note" id="top">Hello</h1> (a) .note (b) .top (c) .big (d) #note
6. 6.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
7. 7.True or false: p is an element selector. (a) False (b) True
8. 8.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
9. 9.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
11. 11.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) #hero (b) .red (c) .big (d) h1
12. 12.🎯 Can many elements share the same class? (a) No (b) Yes
13. 13.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
14. 14.🎯 Which element does the selector #intro style? (a) <p class="note"> (b) <span class="intro"> (c) <span id="main"> (d) <span id="intro">
15. 15.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
16. 16.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
17. 17.True or false: .note is an id selector. (a) False (b) True
18. 18.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
19. 19.🎯 Which element does the selector #hero style? (a) <div id="hero"> (b) <div id="top"> (c) <div class="hero"> (d) <span class="star">
20. 20.🎯 Which CSS selector matches this element?
    <div class="star" id="end">Hello</div> (a) #star (b) .star (c) span (d) .end
21. 21.🎯 Which element does the selector h2 style? (a) <h2 class="menu"> (b) <li> (c) <span id="top"> (d) <div class="menu">
22. 22.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) #intro (b) #menu (c) #top (d) .note
23. 23.True or false: .menu is an id selector. (a) True (b) False
24. 24.True or false: .star is an id selector. (a) True (b) False
25. 25.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
26. 26.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
27. 27.🎯 Which element does the selector #intro style? (a) <h1 id="main"> (b) <h2 class="box"> (c) <h1 class="intro"> (d) <h1 id="intro">
28. 28.True or false: body is an element selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1> (a) #end (b) h2 (c) #menu (d) #hero
30. 30.True or false: h1 is a class selector. (a) False (b) True
31. 31.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <h1 class="note"> (c) <p class="menu"> (d) <p class="star">
32. 32.True or false: #main is an id selector. (a) False (b) True
33. 33.🎯 Which element does the selector .note style? (a) <li class="note"> (b) <li class="big"> (c) <div class="red"> (d) <li id="note">
34. 34.🎯 Which element does the selector .big style? (a) <p class="big"> (b) <h1 class="box"> (c) <p class="red"> (d) <p id="big">
35. 35.🎯 Which element does the selector #hero style? (a) <li id="hero"> (b) <div class="red"> (c) <li id="top"> (d) <li class="hero">
36. 36.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) span (b) .big (c) p (d) .intro
37. 37.🎯 Which element does the selector li style? (a) <p id="top"> (b) <span class="red"> (c) <div> (d) <li class="red">
38. 38.🎯 Which element does the selector #top style? (a) <span class="top"> (b) <span id="intro"> (c) <p class="star"> (d) <span id="top">
39. 39.🎯 Which element does the selector #hero style? (a) <h1 class="hero"> (b) <h1 id="top"> (c) <h1 id="hero"> (d) <h2 class="note">
40. 40.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h1 id="main"> (c) <h1 id="logo"> (d) <h2 class="big">

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