CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 111 · 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 .menu? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
3. 3.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <span class="intro"> (c) <span id="intro"> (d) <p class="note">
4. 4.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
5. 5.🎯 Which CSS selector matches this element?
   <li class="red" id="intro">Hello</li> (a) .red (b) #red (c) .intro (d) .box
6. 6.True or false: .menu is a class selector. (a) False (b) True
7. 7.🎯 Which CSS selector matches this element?
   <p class="red" id="end">Hello</p> (a) .box (b) h1 (c) .red (d) #red
8. 8.True or false: p is an id selector. (a) False (b) True
9. 9.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Can many elements share the same class? (a) No (b) Yes
11. 11.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
12. 12.🎯 Which element does the selector #end style? (a) <h1 class="star"> (b) <p id="end"> (c) <p id="hero"> (d) <p class="end">
13. 13.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
14. 14.True or false: body is an element selector. (a) True (b) False
15. 15.True or false: #end is an id selector. (a) True (b) False
16. 16.True or false: li is a class selector. (a) True (b) False
17. 17.True or false: .menu is an id selector. (a) True (b) False
18. 18.🎯 Which element does the selector .note style? (a) <p class="note"> (b) <h1 class="red"> (c) <p class="big"> (d) <p id="note">
19. 19.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .intro (b) .menu (c) #main (d) #menu
20. 20.🎯 Which element does the selector p style? (a) <h2 class="note"> (b) <p class="note"> (c) <h1> (d) <li id="hero">
21. 21.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
22. 22.🎯 Which element does the selector .menu style? (a) <li class="menu"> (b) <li class="note"> (c) <div class="big"> (d) <li id="menu">
23. 23.🎯 Which element does the selector li style? (a) <div> (b) <p id="intro"> (c) <li class="red"> (d) <span class="red">
24. 24.🎯 Which element does the selector li style? (a) <span class="star"> (b) <p id="top"> (c) <div> (d) <li class="star">
25. 25.True or false: #end is an element selector. (a) False (b) True
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) .red (b) #intro (c) h1 (d) h2
27. 27.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <h2 id="main"> (c) <h2 id="intro"> (d) <li class="menu">
28. 28.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) span (b) .intro (c) #red (d) #intro
29. 29.True or false: .star is an id selector. (a) True (b) False
30. 30.True or false: #hero is an element selector. (a) True (b) False
31. 31.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) .note (b) .top (c) div (d) #top
32. 32.🎯 Which element does the selector #top style? (a) <li id="top"> (b) <li id="intro"> (c) <li class="top"> (d) <div class="star">
33. 33.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) .star (b) #box (c) #main (d) div
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) .box (b) #main (c) h1 (d) .intro
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="star" id="end">Hello</h2> (a) .star (b) #star (c) .end (d) li
36. 36.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) .red (b) li (c) #big (d) div
37. 37.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
38. 38.🎯 Which element does the selector div style? (a) <p class="star"> (b) <div class="star"> (c) <span> (d) <h1 id="main">
39. 39.🎯 Which CSS selector matches this element?
    <li class="red" id="main">Hello</li> (a) div (b) .box (c) li (d) #logo
40. 40.🎯 Which element does the selector #main style? (a) <li class="red"> (b) <h2 id="main"> (c) <h2 id="logo"> (d) <h2 class="main">

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