CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 926 · 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 .note? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 Which CSS selector matches this element?
   <li class="big" id="top">Hello</li> (a) div (b) .top (c) #intro (d) .big
3. 3.True or false: h1 is a class selector. (a) False (b) True
4. 4.True or false: .big is a class selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <li class="menu" id="logo">Hello</li> (a) div (b) #menu (c) .logo (d) li
6. 6.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="menu"> (c) <div id="end"> (d) <h1 class="menu">
7. 7.🎯 Can many elements share the same class? (a) Yes (b) No
8. 8.True or false: .card is a class selector. (a) True (b) False
9. 9.🎯 Which element does the selector #top style? (a) <h2 id="top"> (b) <h2 class="top"> (c) <h2 id="intro"> (d) <li class="box">
10. 10.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
11. 11.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) h2 (b) #big (c) li (d) .red
12. 12.True or false: #hero is an id selector. (a) False (b) True
13. 13.True or false: .note is an id selector. (a) True (b) False
14. 14.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
15. 15.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) #star (b) #top (c) #hero (d) span
16. 16.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span> (a) #logo (b) span (c) #box (d) .star
17. 17.🎯 Which element does the selector .big style? (a) <li id="big"> (b) <li class="big"> (c) <div class="box"> (d) <li class="red">
18. 18.🎯 Which element does the selector .box style? (a) <h2 class="star"> (b) <h2 id="box"> (c) <li class="menu"> (d) <h2 class="box">
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) #note (b) li (c) #main (d) .main
20. 20.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
21. 21.True or false: .star is an id selector. (a) False (b) True
22. 22.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) .box (b) .red (c) span (d) #red
23. 23.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
24. 24.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) #menu (b) .menu (c) .note (d) #main
25. 25.🎯 Which element does the selector #main style? (a) <div id="logo"> (b) <span class="menu"> (c) <div id="main"> (d) <div class="main">
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) .red (b) #end (c) li (d) .end
27. 27.True or false: #end is an id selector. (a) False (b) True
28. 28.🎯 Which element does the selector .star style? (a) <span class="note"> (b) <div class="star"> (c) <div class="menu"> (d) <div id="star">
29. 29.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) .red (b) h1 (c) #top (d) p
30. 30.🎯 Which sign starts an id selector? (a) # (b) @ (c) . (d) &
31. 31.🎯 Which CSS selector matches this element?
    <span class="menu" id="logo">Hello</span> (a) #end (b) .logo (c) span (d) p
32. 32.🎯 Which element does the selector h2 style? (a) <h2 class="menu"> (b) <span id="top"> (c) <div class="menu"> (d) <li>
33. 33.🎯 Which element does the selector #end style? (a) <span id="hero"> (b) <span class="end"> (c) <p class="note"> (d) <span id="end">
34. 34.🎯 Which element does the selector #main style? (a) <li id="logo"> (b) <div class="menu"> (c) <li id="main"> (d) <li class="main">
35. 35.🎯 Which element does the selector p style? (a) <p class="menu"> (b) <h2 class="menu"> (c) <li id="end"> (d) <h1>
36. 36.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="box"> (c) <span class="box"> (d) <h2 id="intro">
37. 37.🎯 Which element does the selector .box style? (a) <span class="star"> (b) <span id="box"> (c) <p class="menu"> (d) <span class="box">
38. 38.🎯 Which element does the selector div style? (a) <p class="note"> (b) <h1 id="top"> (c) <span> (d) <div class="note">
39. 39.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
40. 40.True or false: li is an id selector. (a) False (b) True

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