CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 975 · 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: img is a class selector. (a) False (b) True
2. 2.True or false: .card is an element selector. (a) True (b) False
3. 3.True or false: h1 is an element selector. (a) False (b) True
4. 4.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
6. 6.🎯 Which CSS selector matches this element?
   <div class="menu" id="top">Hello</div> (a) span (b) .top (c) .menu (d) #menu
7. 7.🎯 Which CSS selector matches this element?
   <li class="red" id="logo">Hello</li> (a) #end (b) li (c) div (d) .box
8. 8.🎯 Can many elements share the same class? (a) Yes (b) No
9. 9.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) p (b) .intro (c) #main (d) h1
11. 11.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <li> (c) <span id="logo"> (d) <h2 class="red">
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) .hero (b) .note (c) h1 (d) h2
13. 13.🎯 Which CSS selector matches this element?
    <span class="menu" id="end">Hello</span> (a) .note (b) span (c) .end (d) #menu
14. 14.🎯 Which element does the selector #intro style? (a) <li id="main"> (b) <div class="star"> (c) <li class="intro"> (d) <li id="intro">
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1> (a) .star (b) #box (c) h2 (d) .box
16. 16.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
17. 17.True or false: h1 is a class selector. (a) True (b) False
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) .hero (b) #star (c) h2 (d) #top
19. 19.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) #note (b) #logo (c) .note (d) .main
20. 20.🎯 Which element does the selector #top style? (a) <div class="star"> (b) <li class="top"> (c) <li id="top"> (d) <li id="intro">
21. 21.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) .main (b) .big (c) #logo (d) #main
22. 22.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
23. 23.🎯 Which element does the selector .red style? (a) <div id="red"> (b) <div class="red"> (c) <span class="star"> (d) <div class="box">
24. 24.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) #end (b) #logo (c) .logo (d) span
25. 25.🎯 Which element does the selector .menu style? (a) <li class="note"> (b) <li class="menu"> (c) <li id="menu"> (d) <div class="big">
26. 26.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) #note (b) div (c) .intro (d) span
27. 27.True or false: li is a class selector. (a) True (b) False
28. 28.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) #main (b) .main (c) li (d) #box
30. 30.True or false: body is an element selector. (a) True (b) False
31. 31.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) #intro (b) #menu (c) .menu (d) .top
32. 32.🎯 Which element does the selector li style? (a) <p id="logo"> (b) <div> (c) <span class="box"> (d) <li class="box">
33. 33.🎯 Which element does the selector h1 style? (a) <h1 class="big"> (b) <div id="main"> (c) <li class="big"> (d) <h2>
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) .star (b) h1 (c) #logo (d) h2
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) .star (b) .main (c) #logo (d) .box
36. 36.🎯 Which element does the selector h1 style? (a) <div id="intro"> (b) <h2> (c) <h1 class="menu"> (d) <li class="menu">
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="hero">Hello</h2> (a) .note (b) #menu (c) h2 (d) #top
38. 38.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
39. 39.🎯 Which element does the selector #logo style? (a) <p class="logo"> (b) <h1 class="big"> (c) <p id="end"> (d) <p id="logo">
40. 40.🎯 Which element does the selector #hero style? (a) <div class="hero"> (b) <span class="red"> (c) <div id="hero"> (d) <div id="top">

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