CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 436 · 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 .big? (a) an id selector (b) an element selector (c) a class selector
2. 2.🎯 Which sign starts a class selector? (a) & (b) @ (c) . (d) #
3. 3.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h1 id="big"> (c) <h1 class="red"> (d) <h2 class="box">
4. 4.🎯 Which CSS selector matches this element?
   <h1 class="note" id="hero">Hello</h1> (a) .note (b) .hero (c) #note (d) .big
5. 5.🎯 Which element does the selector #end style? (a) <p id="hero"> (b) <p id="end"> (c) <p class="end"> (d) <h1 class="box">
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) .big (b) #main (c) #note (d) #intro
7. 7.🎯 Which CSS selector matches this element?
   <li class="star" id="intro">Hello</li> (a) #intro (b) #main (c) .menu (d) #star
8. 8.True or false: .note is an element selector. (a) True (b) False
9. 9.True or false: #logo is an id selector. (a) False (b) True
10. 10.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
11. 11.True or false: .menu is a class selector. (a) True (b) False
12. 12.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) span (b) .big (c) .hero (d) .note
13. 13.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
14. 14.True or false: .star is an id selector. (a) True (b) False
15. 15.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
16. 16.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <div class="star"> (c) <li> (d) <h2 class="star">
17. 17.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="big" id="hero">Hello</h2> (a) li (b) .red (c) h2 (d) .hero
19. 19.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
20. 20.🎯 Which element does the selector h1 style? (a) <div id="logo"> (b) <li class="star"> (c) <h1 class="star"> (d) <h2>
21. 21.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 5 (d) 2
22. 22.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
23. 23.True or false: .card is an id selector. (a) False (b) True
24. 24.🎯 Which element does the selector #intro style? (a) <div id="intro"> (b) <div class="intro"> (c) <div id="main"> (d) <span class="note">
25. 25.🎯 Can many elements share the same class? (a) No (b) Yes
26. 26.🎯 Which element does the selector #intro style? (a) <div class="big"> (b) <li id="intro"> (c) <li id="main"> (d) <li class="intro">
27. 27.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
28. 28.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
29. 29.🎯 Which element does the selector h2 style? (a) <h2 class="box"> (b) <span id="top"> (c) <li> (d) <div class="box">
30. 30.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) .end (b) p (c) span (d) #note
31. 31.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) .note (b) h1 (c) .menu (d) #menu
32. 32.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) .box (b) #box (c) span (d) .intro
33. 33.🎯 Which element does the selector p style? (a) <h2 class="big"> (b) <h1> (c) <p class="big"> (d) <li id="logo">
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) #hero (b) #top (c) .hero (d) .menu
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) .red (b) .top (c) h2 (d) #big
36. 36.True or false: img is an element selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) .top (b) #top (c) h2 (d) .menu
38. 38.True or false: img is an id selector. (a) False (b) True
39. 39.🎯 Which element does the selector .red style? (a) <h2 class="box"> (b) <h2 class="red"> (c) <li class="star"> (d) <h2 id="red">
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) .big (b) #top (c) h2 (d) .red

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