CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 152 · 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.🎯 Which CSS selector matches this element?
   <li class="box" id="hero">Hello</li> (a) .box (b) #top (c) .star (d) div
2. 2.🎯 Which CSS selector matches this element?
   <p class="note" id="top">Hello</p> (a) .top (b) .big (c) .note (d) #note
3. 3.True or false: h1 is an element selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <span class="star" id="hero">Hello</span> (a) .menu (b) .hero (c) #hero (d) #star
5. 5.🎯 Which CSS selector matches this element?
   <p class="box" id="main">Hello</p> (a) h1 (b) #box (c) .star (d) p
6. 6.🎯 Which sign starts a class selector? (a) . (b) # (c) & (d) @
7. 7.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
8. 8.🎯 Which element does the selector #intro style? (a) <span class="big"> (b) <div class="intro"> (c) <div id="main"> (d) <div id="intro">
9. 9.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
10. 10.True or false: body is an element selector. (a) False (b) True
11. 11.True or false: #top is an id selector. (a) True (b) False
12. 12.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
13. 13.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
14. 14.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
15. 15.🎯 Can many elements share the same class? (a) Yes (b) No
16. 16.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) #note (b) .big (c) h1 (d) .note
17. 17.🎯 Which element does the selector .red style? (a) <span class="box"> (b) <span id="red"> (c) <p class="star"> (d) <span class="red">
18. 18.True or false: img is an element selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) #note (b) h2 (c) .note (d) .big
20. 20.🎯 Which element does the selector #end style? (a) <div id="hero"> (b) <div class="end"> (c) <div id="end"> (d) <span class="menu">
21. 21.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h1 id="intro"> (c) <h2 class="note"> (d) <h1 id="top">
22. 22.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
23. 23.🎯 Which element does the selector .box style? (a) <p class="star"> (b) <p class="box"> (c) <h1 class="menu"> (d) <p id="box">
24. 24.True or false: body is a class selector. (a) True (b) False
25. 25.True or false: .menu is a class selector. (a) False (b) True
26. 26.True or false: h1 is an id selector. (a) True (b) False
27. 27.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) #main (b) .star (c) #intro (d) .intro
29. 29.True or false: #main is an element selector. (a) True (b) False
30. 30.True or false: .menu is an id selector. (a) True (b) False
31. 31.🎯 Which element does the selector .menu style? (a) <h1 class="note"> (b) <h2 class="big"> (c) <h1 id="menu"> (d) <h1 class="menu">
32. 32.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) #note (b) #end (c) .note (d) h1
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) .red (b) .top (c) #big (d) .big
34. 34.🎯 Which element does the selector li style? (a) <div> (b) <p id="main"> (c) <li class="menu"> (d) <span class="menu">
35. 35.True or false: .card is an id selector. (a) False (b) True
36. 36.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) #note (b) #intro (c) h2 (d) .big
38. 38.🎯 Which element does the selector span style? (a) <span class="box"> (b) <h2 id="hero"> (c) <p> (d) <h1 class="box">
39. 39.True or false: body is an id selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="main">Hello</h2> (a) .note (b) #menu (c) #main (d) #logo

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