CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 582 · 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.True or false: li is an id selector. (a) True (b) False
2. 2.🎯 Which element does the selector div style? (a) <div class="box"> (b) <span> (c) <p class="box"> (d) <h1 id="top">
3. 3.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
4. 4.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 Which element does the selector #end style? (a) <li class="end"> (b) <li id="hero"> (c) <li id="end"> (d) <div class="box">
6. 6.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
7. 7.🎯 Which CSS selector matches this element?
   <span class="red" id="end">Hello</span> (a) .end (b) #hero (c) p (d) #end
8. 8.🎯 Which element does the selector #end style? (a) <h2 id="hero"> (b) <h2 id="end"> (c) <h2 class="end"> (d) <li class="menu">
9. 9.True or false: h1 is a class selector. (a) False (b) True
10. 10.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <p class="intro"> (c) <p id="intro"> (d) <h1 class="menu">
11. 11.🎯 Which element does the selector div style? (a) <h1 id="top"> (b) <span> (c) <div class="star"> (d) <p class="star">
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) .big (b) h2 (c) #note (d) .end
13. 13.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
14. 14.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) #red (b) #hero (c) h2 (d) #end
15. 15.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
16. 16.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) #intro (b) #star (c) .menu (d) #main
17. 17.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) #star (b) .top (c) span (d) #top
18. 18.🎯 Which element does the selector #main style? (a) <p class="menu"> (b) <span id="logo"> (c) <span id="main"> (d) <span class="main">
19. 19.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) .note (b) .end (c) .big (d) #note
21. 21.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
22. 22.🎯 Which element does the selector .box style? (a) <div class="star"> (b) <div id="box"> (c) <div class="box"> (d) <span class="menu">
23. 23.True or false: #hero is an element selector. (a) True (b) False
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) .star (b) .intro (c) #box (d) #intro
25. 25.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
26. 26.True or false: .menu is a class selector. (a) True (b) False
27. 27.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <span class="star"> (c) <div id="end"> (d) <div id="hero">
28. 28.True or false: .card is an id selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) p (b) #box (c) .star (d) .box
30. 30.🎯 Which element does the selector .box style? (a) <h2 class="menu"> (b) <h1 id="box"> (c) <h1 class="box"> (d) <h1 class="star">
31. 31.True or false: h1 is an element selector. (a) True (b) False
32. 32.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
33. 33.True or false: .card is an element selector. (a) False (b) True
34. 34.True or false: .note is an element selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) .big (b) #main (c) #big (d) p
36. 36.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h1 class="note"> (c) <div id="logo"> (d) <h2>
37. 37.True or false: #end is a class selector. (a) False (b) True
38. 38.🎯 Which element does the selector .note style? (a) <p class="note"> (b) <h1 class="red"> (c) <p class="big"> (d) <p id="note">
39. 39.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
40. 40.🎯 Can many elements share the same class? (a) No (b) Yes

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