CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 266 · 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 .star? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 Which CSS selector matches this element?
   <div class="box" id="top">Hello</div> (a) span (b) #top (c) #intro (d) .top
3. 3.True or false: .card is a class selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <div class="box" id="top">Hello</div> (a) #box (b) .top (c) span (d) .box
5. 5.🎯 Which element does the selector h1 style? (a) <h1 class="big"> (b) <li class="big"> (c) <div id="logo"> (d) <h2>
6. 6.🎯 Which CSS selector matches this element?
   <p class="red" id="hero">Hello</p> (a) .red (b) h1 (c) .hero (d) .box
7. 7.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
8. 8.🎯 Which CSS selector matches this element?
   <span class="box" id="main">Hello</span> (a) #box (b) #logo (c) #main (d) .star
9. 9.🎯 Which element does the selector .box style? (a) <li id="box"> (b) <li class="box"> (c) <li class="star"> (d) <div class="menu">
10. 10.🎯 Which element does the selector .red style? (a) <span class="box"> (b) <span class="red"> (c) <span id="red"> (d) <p class="star">
11. 11.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) #note (b) div (c) .top (d) .note
12. 12.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) .star (b) span (c) #intro (d) p
13. 13.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) .box (b) #main (c) .intro (d) .star
14. 14.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
15. 15.True or false: img is an element selector. (a) False (b) True
16. 16.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
17. 17.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) #intro (b) #star (c) .star (d) .top
19. 19.True or false: p is an element selector. (a) False (b) True
20. 20.True or false: body is an id selector. (a) True (b) False
21. 21.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="box" id="hero">Hello</h2> (a) .box (b) .hero (c) li (d) #box
23. 23.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
24. 24.True or false: #logo is an id selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) .note (b) .top (c) #top (d) #intro
26. 26.True or false: #top is an element selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) #intro (b) .red (c) .intro (d) #big
28. 28.🎯 Which element does the selector li style? (a) <span class="red"> (b) <p id="top"> (c) <div> (d) <li class="red">
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) .big (b) #hero (c) li (d) .red
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) #red (b) .red (c) .box (d) .top
31. 31.🎯 Can many elements share the same class? (a) Yes (b) No
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) .intro (b) #note (c) h2 (d) .big
33. 33.True or false: p is a class selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) #box (b) h2 (c) h1 (d) .main
35. 35.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
36. 36.🎯 Which element does the selector .box style? (a) <div id="box"> (b) <div class="star"> (c) <div class="box"> (d) <span class="menu">
37. 37.True or false: .card is an id selector. (a) True (b) False
38. 38.True or false: .menu is a class selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) .big (b) #main (c) #note (d) #logo
40. 40.🎯 Which element does the selector .star style? (a) <h1 id="star"> (b) <h1 class="menu"> (c) <h1 class="star"> (d) <h2 class="note">

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