CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 423 · 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 .note? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <p class="star"> (c) <p class="menu"> (d) <h1 class="note">
3. 3.🎯 Can many elements share the same class? (a) Yes (b) No
4. 4.🎯 Which CSS selector matches this element?
   <span class="big" id="hero">Hello</span> (a) .red (b) .hero (c) #big (d) #hero
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="big" id="end">Hello</h1> (a) #big (b) #hero (c) .end (d) .big
6. 6.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
7. 7.🎯 Which element does the selector h2 style? (a) <li> (b) <h2 class="big"> (c) <span id="hero"> (d) <div class="big">
8. 8.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="note" id="end">Hello</h1> (a) #note (b) h2 (c) .note (d) .big
10. 10.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
11. 11.True or false: .card is an id selector. (a) True (b) False
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) #intro (b) .top (c) h1 (d) .menu
13. 13.True or false: .big is an element selector. (a) False (b) True
14. 14.True or false: img is an element selector. (a) False (b) True
15. 15.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) h1 (b) #logo (c) #red (d) .box
17. 17.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) .note (b) #menu (c) span (d) #intro
18. 18.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
19. 19.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
20. 20.True or false: .big is a class selector. (a) True (b) False
21. 21.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
22. 22.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) p (b) .hero (c) h1 (d) .menu
23. 23.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) .main (b) span (c) .red (d) p
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1> (a) .note (b) .menu (c) .end (d) h2
25. 25.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) .big (b) #intro (c) li (d) .top
26. 26.True or false: #logo is an element selector. (a) False (b) True
27. 27.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
28. 28.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) .hero (b) #top (c) .red (d) p
29. 29.True or false: h1 is an element selector. (a) False (b) True
30. 30.🎯 Which element does the selector .star style? (a) <div class="note"> (b) <li class="star"> (c) <li class="menu"> (d) <li id="star">
31. 31.True or false: body is a class selector. (a) True (b) False
32. 32.True or false: #end is an element selector. (a) False (b) True
33. 33.🎯 Which element does the selector #end style? (a) <h2 class="end"> (b) <li class="note"> (c) <h2 id="hero"> (d) <h2 id="end">
34. 34.🎯 Which element does the selector .box style? (a) <h2 class="star"> (b) <li class="menu"> (c) <h2 class="box"> (d) <h2 id="box">
35. 35.🎯 Which CSS selector matches this element?
    <li class="box" id="main">Hello</li> (a) #logo (b) #box (c) .star (d) #main
36. 36.True or false: .note is an id selector. (a) True (b) False
37. 37.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
38. 38.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) p (b) .end (c) h1 (d) .note
39. 39.🎯 Which element does the selector span style? (a) <h1 class="big"> (b) <h2 id="logo"> (c) <p> (d) <span class="big">
40. 40.🎯 Which element does the selector .big style? (a) <div id="big"> (b) <span class="box"> (c) <div class="big"> (d) <div class="red">

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