CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 664 · 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?
   <p class="big" id="hero">Hello</p> (a) #big (b) .hero (c) #hero (d) .red
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="note" id="logo">Hello</h1> (a) .logo (b) h2 (c) .big (d) .note
3. 3.🎯 Which element does the selector #top style? (a) <h2 class="top"> (b) <h2 id="intro"> (c) <h2 id="top"> (d) <li class="menu">
4. 4.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
5. 5.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
6. 6.🎯 Which CSS selector matches this element?
   <div class="box" id="logo">Hello</div> (a) span (b) .logo (c) div (d) #box
7. 7.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
8. 8.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
9. 9.True or false: #hero is an id selector. (a) False (b) True
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) #intro (b) li (c) .intro (d) #main
11. 11.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) .hero (b) #top (c) div (d) .menu
12. 12.True or false: .card is an id selector. (a) False (b) True
13. 13.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
14. 14.🎯 Which element does the selector .red style? (a) <div class="red"> (b) <div class="box"> (c) <span class="star"> (d) <div id="red">
15. 15.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) .main (b) #logo (c) #note (d) .note
16. 16.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) .end (b) #red (c) h2 (d) li
18. 18.🎯 Which element does the selector #main style? (a) <h1 class="big"> (b) <p class="main"> (c) <p id="logo"> (d) <p id="main">
19. 19.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
20. 20.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) .menu (b) #menu (c) #main (d) span
21. 21.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
22. 22.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) #logo (b) .main (c) #main (d) h2
24. 24.🎯 Which element does the selector li style? (a) <div> (b) <p id="top"> (c) <li class="big"> (d) <span class="big">
25. 25.🎯 Which element does the selector .red style? (a) <h2 class="star"> (b) <h1 class="red"> (c) <h1 id="red"> (d) <h1 class="box">
26. 26.🎯 Which element does the selector div style? (a) <span> (b) <p class="big"> (c) <h1 id="logo"> (d) <div class="big">
27. 27.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
28. 28.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) #end (b) span (c) #box (d) #logo
29. 29.🎯 Which element does the selector li style? (a) <li class="note"> (b) <div> (c) <span class="note"> (d) <p id="hero">
30. 30.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
31. 31.True or false: #logo is an id selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) .intro (b) #intro (c) .menu (d) h2
33. 33.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) h1 (b) #top (c) #hero (d) .menu
34. 34.🎯 Which element does the selector #hero style? (a) <h1 id="top"> (b) <h1 class="hero"> (c) <h2 class="red"> (d) <h1 id="hero">
35. 35.🎯 Which element does the selector .red style? (a) <h2 id="red"> (b) <li class="star"> (c) <h2 class="box"> (d) <h2 class="red">
36. 36.🎯 Which element does the selector .menu style? (a) <li id="menu"> (b) <div class="big"> (c) <li class="note"> (d) <li class="menu">
37. 37.True or false: .big is a class selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) .box (b) .star (c) #end (d) #box
39. 39.🎯 Which element does the selector li style? (a) <p id="intro"> (b) <span class="box"> (c) <li class="box"> (d) <div>
40. 40.🎯 Can many elements share the same class? (a) Yes (b) No

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