CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 467 · 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 .card? (a) an id selector (b) an element selector (c) a class selector
2. 2.🎯 Which CSS selector matches this element?
   <li class="big" id="top">Hello</li> (a) .top (b) li (c) div (d) #big
3. 3.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
4. 4.🎯 Which element does the selector #main style? (a) <h2 class="main"> (b) <h2 id="logo"> (c) <li class="big"> (d) <h2 id="main">
5. 5.🎯 Which element does the selector .note style? (a) <p class="big"> (b) <p class="note"> (c) <h1 class="red"> (d) <p id="note">
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="note" id="top">Hello</h1> (a) #top (b) .top (c) #intro (d) #note
7. 7.🎯 Which element does the selector #top style? (a) <h2 class="red"> (b) <h1 id="top"> (c) <h1 id="intro"> (d) <h1 class="top">
8. 8.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
9. 9.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) h2 (b) #big (c) .intro (d) .red
11. 11.True or false: #logo is an element selector. (a) False (b) True
12. 12.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
13. 13.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span> (a) #hero (b) p (c) #top (d) .hero
14. 14.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
15. 15.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
16. 16.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
17. 17.🎯 Can many elements share the same class? (a) Yes (b) No
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="star" id="main">Hello</h2> (a) li (b) #main (c) .menu (d) .main
19. 19.🎯 Which element does the selector li style? (a) <div> (b) <p id="hero"> (c) <span class="red"> (d) <li class="red">
20. 20.🎯 Which element does the selector li style? (a) <li class="menu"> (b) <p id="intro"> (c) <span class="menu"> (d) <div>
21. 21.🎯 Which element does the selector p style? (a) <h2 class="note"> (b) <li id="top"> (c) <h1> (d) <p class="note">
22. 22.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) .star (b) p (c) span (d) #box
23. 23.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
24. 24.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
25. 25.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) .red (b) .big (c) .intro (d) #main
26. 26.🎯 Which element does the selector #top style? (a) <h2 id="intro"> (b) <h2 class="top"> (c) <h2 id="top"> (d) <li class="note">
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) #note (b) .main (c) li (d) h2
28. 28.🎯 Which element does the selector h2 style? (a) <div class="star"> (b) <h2 class="star"> (c) <li> (d) <span id="main">
29. 29.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) .end (b) span (c) .red (d) p
30. 30.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <p id="intro"> (c) <p class="intro"> (d) <h1 class="big">
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) #top (b) .hero (c) h2 (d) #hero
32. 32.🎯 Which element does the selector div style? (a) <div class="star"> (b) <span> (c) <h1 id="main"> (d) <p class="star">
33. 33.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="intro"> (c) <li class="box"> (d) <h1 class="box">
34. 34.🎯 Which element does the selector .big style? (a) <li class="red"> (b) <div class="box"> (c) <li class="big"> (d) <li id="big">
35. 35.True or false: #end is an id selector. (a) False (b) True
36. 36.🎯 Which element does the selector .note style? (a) <span id="note"> (b) <p class="red"> (c) <span class="note"> (d) <span class="big">
37. 37.True or false: body is an element selector. (a) False (b) True
38. 38.🎯 Which element does the selector #hero style? (a) <span class="hero"> (b) <span id="top"> (c) <span id="hero"> (d) <p class="note">
39. 39.True or false: p is a class selector. (a) False (b) True
40. 40.True or false: li is an element selector. (a) True (b) False

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