CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 483 · 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?
   <h1 class="box" id="main">Hello</h1> (a) h2 (b) #box (c) #logo (d) .box
2. 2.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p class="red"> (c) <p id="big"> (d) <p class="big">
3. 3.🎯 Which element does the selector p style? (a) <p class="box"> (b) <h2 class="box"> (c) <h1> (d) <li id="logo">
4. 4.🎯 Which element does the selector .box style? (a) <h1 class="menu"> (b) <p class="box"> (c) <p class="star"> (d) <p id="box">
5. 5.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
6. 6.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
7. 7.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
8. 8.🎯 Which CSS selector matches this element?
   <p class="star" id="main">Hello</p> (a) .menu (b) p (c) h1 (d) #star
9. 9.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
10. 10.🎯 Which element does the selector #intro style? (a) <div id="main"> (b) <div id="intro"> (c) <div class="intro"> (d) <span class="note">
11. 11.🎯 Which sign starts a class selector? (a) @ (b) . (c) # (d) &
12. 12.🎯 Which element does the selector .big style? (a) <div id="big"> (b) <span class="box"> (c) <div class="big"> (d) <div class="red">
13. 13.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
14. 14.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) div (b) .top (c) span (d) #intro
15. 15.True or false: p is an element selector. (a) True (b) False
16. 16.True or false: #hero is an element selector. (a) True (b) False
17. 17.🎯 Which element does the selector .note style? (a) <li class="red"> (b) <h2 class="note"> (c) <h2 class="big"> (d) <h2 id="note">
18. 18.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
19. 19.True or false: .big is a class selector. (a) True (b) False
20. 20.True or false: .card is an id selector. (a) False (b) True
21. 21.🎯 Which element does the selector p style? (a) <h1> (b) <li id="logo"> (c) <p class="note"> (d) <h2 class="note">
22. 22.True or false: .menu is a class selector. (a) False (b) True
23. 23.True or false: h1 is an id selector. (a) False (b) True
24. 24.True or false: li is an element selector. (a) False (b) True
25. 25.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="big"> (c) <span id="logo"> (d) <h2 class="big">
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) .intro (b) #intro (c) #menu (d) #main
27. 27.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) li (b) #hero (c) .end (d) .box
28. 28.🎯 Which element does the selector .box style? (a) <p class="menu"> (b) <span class="box"> (c) <span id="box"> (d) <span class="star">
29. 29.True or false: img is an element selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) #top (b) div (c) .menu (d) .note
31. 31.🎯 Which element does the selector #intro style? (a) <span id="intro"> (b) <span id="main"> (c) <span class="intro"> (d) <p class="box">
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) .big (b) h2 (c) li (d) #note
33. 33.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
34. 34.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
35. 35.🎯 Which element does the selector .box style? (a) <div class="star"> (b) <div id="box"> (c) <div class="box"> (d) <span class="menu">
36. 36.🎯 Can many elements share the same class? (a) No (b) Yes
37. 37.True or false: #logo is an id selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) .box (b) span (c) .red (d) #red
39. 39.🎯 Which element does the selector span style? (a) <span class="box"> (b) <p> (c) <h2 id="end"> (d) <h1 class="box">
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) h2 (b) .end (c) #note (d) .big

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