CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 444 · 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 h1? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 Which element does the selector #hero style? (a) <li class="hero"> (b) <div class="star"> (c) <li id="top"> (d) <li id="hero">
3. 3.🎯 Which CSS selector matches this element?
   <div class="star" id="top">Hello</div> (a) #intro (b) .top (c) .star (d) #star
4. 4.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="logo"> (c) <li class="box"> (d) <h1 class="box">
5. 5.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
6. 6.🎯 Which element does the selector li style? (a) <div> (b) <span class="menu"> (c) <p id="logo"> (d) <li class="menu">
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="note" id="main">Hello</h1> (a) h1 (b) h2 (c) #logo (d) #note
8. 8.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
9. 9.🎯 Which CSS selector matches this element?
   <span class="red" id="intro">Hello</span> (a) p (b) #red (c) .red (d) .intro
10. 10.🎯 Which element does the selector .note style? (a) <div class="big"> (b) <div id="note"> (c) <div class="note"> (d) <span class="red">
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) #intro (b) #menu (c) .note (d) #main
12. 12.🎯 Can many elements share the same class? (a) No (b) Yes
13. 13.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
14. 14.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
15. 15.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) #hero (b) h1 (c) .end (d) #note
17. 17.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) div (b) #intro (c) .big (d) #big
18. 18.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 Which element does the selector .big style? (a) <li class="big"> (b) <div class="box"> (c) <li class="red"> (d) <li id="big">
20. 20.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) .box (b) #intro (c) #red (d) span
21. 21.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) #star (b) p (c) .menu (d) h1
22. 22.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) .intro (b) #note (c) #intro (d) .big
23. 23.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h1 id="big"> (c) <h1 class="red"> (d) <h2 class="box">
24. 24.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) h1 (b) #red (c) h2 (d) .top
26. 26.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) .box (b) #intro (c) div (d) .red
27. 27.True or false: img is an element selector. (a) False (b) True
28. 28.True or false: .menu is an element selector. (a) True (b) False
29. 29.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
30. 30.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) .top (b) #menu (c) h1 (d) #top
31. 31.🎯 Which element does the selector #hero style? (a) <div id="top"> (b) <span class="red"> (c) <div class="hero"> (d) <div id="hero">
32. 32.True or false: .note is a class selector. (a) False (b) True
33. 33.🎯 Which element does the selector div style? (a) <p class="box"> (b) <div class="box"> (c) <span> (d) <h1 id="intro">
34. 34.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
35. 35.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
36. 36.True or false: img is a class selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) .intro (b) h2 (c) .star (d) #main
38. 38.True or false: body is an id selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) .star (b) div (c) .hero (d) #top
40. 40.True or false: .star is an element selector. (a) True (b) False

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