CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 489 · 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.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
2. 2.🎯 Which element does the selector p style? (a) <li id="end"> (b) <h1> (c) <p class="star"> (d) <h2 class="star">
3. 3.True or false: .menu is an element selector. (a) True (b) False
4. 4.🎯 Which CSS selector matches this element?
   <li class="note" id="top">Hello</li> (a) div (b) li (c) #note (d) .big
5. 5.True or false: .star is an id selector. (a) True (b) False
6. 6.🎯 Which CSS selector matches this element?
   <span class="menu" id="top">Hello</span> (a) .top (b) #menu (c) #intro (d) span
7. 7.🎯 Which element does the selector .big style? (a) <p class="box"> (b) <span id="big"> (c) <span class="big"> (d) <span class="red">
8. 8.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
9. 9.True or false: .star is an element selector. (a) True (b) False
10. 10.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
11. 11.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <span class="top"> (c) <p class="note"> (d) <span id="top">
12. 12.🎯 Which element does the selector #logo style? (a) <span id="end"> (b) <p class="note"> (c) <span id="logo"> (d) <span class="logo">
13. 13.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) #main (b) .intro (c) p (d) #star
14. 14.🎯 Which element does the selector li style? (a) <span class="box"> (b) <p id="end"> (c) <div> (d) <li class="box">
15. 15.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <li> (c) <div class="menu"> (d) <h2 class="menu">
16. 16.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) #end (b) .big (c) #big (d) .logo
17. 17.True or false: body is an id selector. (a) False (b) True
18. 18.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
19. 19.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #intro (b) .big (c) h1 (d) .note
20. 20.🎯 Which CSS selector matches this element?
    <li class="menu" id="end">Hello</li> (a) #menu (b) li (c) .end (d) div
21. 21.True or false: .note is a class selector. (a) False (b) True
22. 22.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
23. 23.🎯 Which element does the selector .box style? (a) <li id="box"> (b) <li class="star"> (c) <li class="box"> (d) <div class="menu">
24. 24.True or false: img is an element selector. (a) False (b) True
25. 25.True or false: .star is a class selector. (a) True (b) False
26. 26.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
27. 27.🎯 Can many elements share the same class? (a) Yes (b) No
28. 28.🎯 Which element does the selector h2 style? (a) <h2 class="note"> (b) <span id="top"> (c) <li> (d) <div class="note">
29. 29.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) #hero (b) p (c) #menu (d) .end
30. 30.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
31. 31.🎯 Which element does the selector li style? (a) <div> (b) <span class="big"> (c) <p id="top"> (d) <li class="big">
32. 32.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) p (b) #top (c) .menu (d) .hero
33. 33.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) #logo (b) .main (c) p (d) #note
34. 34.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
35. 35.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <li class="red"> (c) <li class="box"> (d) <div class="star">
36. 36.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
37. 37.True or false: h1 is an element selector. (a) True (b) False
38. 38.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) p (b) .big (c) #note (d) .note
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) #star (b) li (c) #top (d) .star
40. 40.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) #big (b) span (c) div (d) .top

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