CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 274 · 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.True or false: .menu is an id selector. (a) False (b) True
2. 2.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="main">Hello</h2> (a) #logo (b) h2 (c) #menu (d) .main
4. 4.True or false: img is a class selector. (a) False (b) True
5. 5.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <div id="hero"> (c) <span class="big"> (d) <div id="end">
6. 6.True or false: .card is an id selector. (a) False (b) True
7. 7.🎯 Which element does the selector .big style? (a) <li class="red"> (b) <li id="big"> (c) <li class="big"> (d) <div class="box">
8. 8.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
9. 9.🎯 Which CSS selector matches this element?
   <p class="big" id="end">Hello</p> (a) .end (b) #hero (c) h1 (d) #end
10. 10.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) div (b) .hero (c) #menu (d) .menu
11. 11.🎯 Which element does the selector #logo style? (a) <span class="star"> (b) <div id="end"> (c) <div class="logo"> (d) <div id="logo">
12. 12.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) p (b) #box (c) span (d) .star
13. 13.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
14. 14.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
15. 15.🎯 Which sign starts a class selector? (a) & (b) @ (c) . (d) #
16. 16.🎯 Which element does the selector div style? (a) <span> (b) <div class="menu"> (c) <h1 id="logo"> (d) <p class="menu">
17. 17.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) .note (b) span (c) #logo (d) div
18. 18.🎯 Can many elements share the same class? (a) No (b) Yes
19. 19.🎯 Which element does the selector li style? (a) <div> (b) <span class="big"> (c) <li class="big"> (d) <p id="intro">
20. 20.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h2 class="note"> (c) <h1 class="hero"> (d) <h1 id="top">
21. 21.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) .note (b) #intro (c) .top (d) #top
22. 22.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
23. 23.🎯 Which element does the selector .red style? (a) <div class="red"> (b) <div class="box"> (c) <span class="star"> (d) <div id="red">
24. 24.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="red"> (c) <li class="red"> (d) <div id="hero">
25. 25.True or false: #main is an id selector. (a) False (b) True
26. 26.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <div id="end"> (c) <h2> (d) <h1 class="star">
27. 27.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) #big (b) .big (c) .red (d) .end
28. 28.🎯 Which element does the selector #main style? (a) <div id="main"> (b) <div class="main"> (c) <div id="logo"> (d) <span class="note">
29. 29.True or false: p is an id selector. (a) False (b) True
30. 30.🎯 Which element does the selector #hero style? (a) <li class="hero"> (b) <li id="top"> (c) <div class="note"> (d) <li id="hero">
31. 31.True or false: .star is a class selector. (a) True (b) False
32. 32.🎯 Which element does the selector p style? (a) <h2 class="red"> (b) <li id="top"> (c) <h1> (d) <p class="red">
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) #end (b) #star (c) li (d) h2
34. 34.True or false: .note is a class selector. (a) False (b) True
35. 35.🎯 Which element does the selector #main style? (a) <li id="logo"> (b) <div class="big"> (c) <li id="main"> (d) <li class="main">
36. 36.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
37. 37.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
38. 38.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
39. 39.True or false: li is an element selector. (a) True (b) False
40. 40.🎯 Which element does the selector #end style? (a) <p class="end"> (b) <h1 class="note"> (c) <p id="end"> (d) <p id="hero">

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