CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 160 · 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?
   <h1 class="big" id="main">Hello</h1> (a) #big (b) .red (c) #logo (d) .big
2. 2.🎯 Which CSS selector matches this element?
   <li class="big" id="main">Hello</li> (a) div (b) #big (c) .big (d) .main
3. 3.🎯 Which element does the selector div style? (a) <h1 id="top"> (b) <p class="note"> (c) <span> (d) <div class="note">
4. 4.True or false: #logo is an id selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="main">Hello</h2> (a) .main (b) .note (c) li (d) h2
6. 6.🎯 Which CSS selector matches this element?
   <span class="red" id="top">Hello</span> (a) .box (b) #red (c) #top (d) p
7. 7.🎯 Can many elements share the same class? (a) Yes (b) No
8. 8.🎯 Which CSS selector matches this element?
   <span class="big" id="main">Hello</span> (a) .red (b) p (c) span (d) #big
9. 9.True or false: .star is a class selector. (a) False (b) True
10. 10.🎯 Which element does the selector .big style? (a) <li class="box"> (b) <h2 id="big"> (c) <h2 class="red"> (d) <h2 class="big">
11. 11.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
12. 12.🎯 Which element does the selector #logo style? (a) <h2 id="end"> (b) <li class="star"> (c) <h2 id="logo"> (d) <h2 class="logo">
13. 13.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) #note (b) h1 (c) h2 (d) .big
14. 14.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) .box (b) li (c) #end (d) #red
15. 15.True or false: #end is an id selector. (a) False (b) True
16. 16.True or false: #main is an id selector. (a) False (b) True
17. 17.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
18. 18.🎯 Which element does the selector li style? (a) <span class="big"> (b) <p id="hero"> (c) <li class="big"> (d) <div>
19. 19.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
20. 20.🎯 Which element does the selector li style? (a) <span class="red"> (b) <p id="logo"> (c) <div> (d) <li class="red">
21. 21.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
22. 22.🎯 Which element does the selector p style? (a) <p class="note"> (b) <h2 class="note"> (c) <li id="main"> (d) <h1>
23. 23.True or false: #hero is a class selector. (a) True (b) False
24. 24.🎯 Which element does the selector span style? (a) <span class="star"> (b) <p> (c) <h2 id="end"> (d) <h1 class="star">
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2> (a) li (b) h2 (c) #main (d) #red
26. 26.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
27. 27.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
28. 28.True or false: .note is an id selector. (a) False (b) True
29. 29.🎯 Which element does the selector .star style? (a) <h1 class="note"> (b) <p class="menu"> (c) <p class="star"> (d) <p id="star">
30. 30.True or false: #main is an element selector. (a) True (b) False
31. 31.🎯 Which element does the selector p style? (a) <li id="logo"> (b) <h2 class="box"> (c) <p class="box"> (d) <h1>
32. 32.🎯 Which element does the selector #end style? (a) <li id="end"> (b) <li id="hero"> (c) <div class="red"> (d) <li class="end">
33. 33.🎯 Which element does the selector #main style? (a) <h2 class="big"> (b) <h1 id="logo"> (c) <h1 class="main"> (d) <h1 id="main">
34. 34.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) span (b) div (c) #red (d) .box
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) #main (b) .intro (c) .menu (d) h1
36. 36.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
37. 37.True or false: .note is an element selector. (a) False (b) True
38. 38.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
39. 39.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <li id="top"> (c) <div class="star"> (d) <li id="intro">
40. 40.🎯 Which element does the selector div style? (a) <h1 id="hero"> (b) <div class="star"> (c) <p class="star"> (d) <span>

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