CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 886 · 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="red" id="main">Hello</h1> (a) #logo (b) .red (c) .main (d) #red
2. 2.True or false: #top is an id selector. (a) False (b) True
3. 3.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="red"> (c) <div id="top"> (d) <li class="red">
4. 4.🎯 Which CSS selector matches this element?
   <div class="box" id="end">Hello</div> (a) .end (b) .star (c) #hero (d) div
5. 5.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li id="note"> (c) <li class="big"> (d) <li class="note">
6. 6.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
7. 7.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
8. 8.🎯 Which element does the selector #end style? (a) <h1 class="end"> (b) <h2 class="red"> (c) <h1 id="hero"> (d) <h1 id="end">
9. 9.🎯 Which element does the selector h1 style? (a) <div id="intro"> (b) <h1 class="menu"> (c) <h2> (d) <li class="menu">
10. 10.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) .top (b) .note (c) h2 (d) .menu
12. 12.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
13. 13.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) div (b) .main (c) #big (d) .red
14. 14.True or false: .note is a class selector. (a) True (b) False
15. 15.True or false: .star is a class selector. (a) True (b) False
16. 16.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
17. 17.🎯 Which element does the selector .menu style? (a) <p id="menu"> (b) <h1 class="big"> (c) <p class="note"> (d) <p class="menu">
18. 18.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="big"> (c) <span id="top"> (d) <h2 class="big">
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) .main (b) h2 (c) .red (d) .big
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) .end (b) h2 (c) #note (d) h1
21. 21.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) #menu (b) .menu (c) .end (d) .note
23. 23.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) #intro (b) li (c) .red (d) #top
24. 24.True or false: p is a class selector. (a) True (b) False
25. 25.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
26. 26.🎯 Can many elements share the same class? (a) Yes (b) No
27. 27.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span> (a) span (b) .hero (c) #star (d) p
28. 28.🎯 Which element does the selector .star style? (a) <h2 class="note"> (b) <h1 id="star"> (c) <h1 class="star"> (d) <h1 class="menu">
29. 29.🎯 Which element does the selector #hero style? (a) <div id="hero"> (b) <span class="big"> (c) <div class="hero"> (d) <div id="top">
30. 30.🎯 Which element does the selector p style? (a) <h2 class="note"> (b) <p class="note"> (c) <h1> (d) <li id="top">
31. 31.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
32. 32.🎯 Which element does the selector .big style? (a) <h2 id="big"> (b) <h2 class="red"> (c) <h2 class="big"> (d) <li class="box">
33. 33.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) #hero (b) .box (c) div (d) li
34. 34.True or false: body is an id selector. (a) True (b) False
35. 35.True or false: li is an element selector. (a) True (b) False
36. 36.True or false: img is an element selector. (a) False (b) True
37. 37.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
38. 38.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
39. 39.🎯 Which element does the selector li style? (a) <span class="red"> (b) <li class="red"> (c) <p id="intro"> (d) <div>
40. 40.🎯 Which element does the selector span style? (a) <h2 id="main"> (b) <h1 class="box"> (c) <span class="box"> (d) <p>

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