CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 535 · 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.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
2. 2.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <div id="end"> (c) <h1 class="note"> (d) <h2>
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="star" id="hero">Hello</h1> (a) #star (b) .hero (c) .star (d) h2
4. 4.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
5. 5.True or false: p is an element selector. (a) True (b) False
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="big" id="end">Hello</h2> (a) .big (b) #big (c) .end (d) #hero
7. 7.🎯 Which element does the selector p style? (a) <h1> (b) <li id="top"> (c) <h2 class="red"> (d) <p class="red">
8. 8.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
9. 9.True or false: .big is a class selector. (a) True (b) False
10. 10.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
11. 11.True or false: .big is an id selector. (a) False (b) True
12. 12.🎯 Which element does the selector .red style? (a) <div id="red"> (b) <div class="box"> (c) <span class="star"> (d) <div class="red">
13. 13.🎯 Can many elements share the same class? (a) Yes (b) No
14. 14.True or false: .card is an element selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) #logo (b) span (c) .star (d) .menu
16. 16.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
17. 17.True or false: body is an element selector. (a) False (b) True
18. 18.🎯 Which element does the selector #main style? (a) <li id="main"> (b) <li class="main"> (c) <li id="logo"> (d) <div class="red">
19. 19.🎯 Which element does the selector #top style? (a) <span class="top"> (b) <p class="box"> (c) <span id="intro"> (d) <span id="top">
20. 20.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
21. 21.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) h1 (b) #menu (c) #hero (d) .hero
22. 22.🎯 Which CSS selector matches this element?
    <li class="box" id="main">Hello</li> (a) .star (b) #box (c) .main (d) .box
23. 23.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p id="top"> (c) <h1 class="menu"> (d) <p class="top">
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) #hero (b) #note (c) .big (d) h2
25. 25.True or false: .menu is a class selector. (a) False (b) True
26. 26.🎯 Which element does the selector h1 style? (a) <div id="logo"> (b) <h2> (c) <h1 class="menu"> (d) <li class="menu">
27. 27.True or false: .note is an id selector. (a) True (b) False
28. 28.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="big"> (c) <li class="big"> (d) <div id="logo">
29. 29.🎯 Which element does the selector .big style? (a) <span class="red"> (b) <span class="big"> (c) <p class="box"> (d) <span id="big">
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) #big (b) h2 (c) h1 (d) .red
31. 31.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p class="big"> (c) <p id="big"> (d) <p class="red">
32. 32.True or false: .star is an id selector. (a) False (b) True
33. 33.🎯 Which element does the selector .red style? (a) <h1 class="star"> (b) <p id="red"> (c) <p class="red"> (d) <p class="box">
34. 34.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .end (b) #hero (c) #end (d) #note
35. 35.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) #intro (b) .top (c) #big (d) .big
36. 36.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <span class="big"> (c) <div id="end"> (d) <div id="hero">
37. 37.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
38. 38.True or false: li is an id selector. (a) True (b) False
39. 39.🎯 Which element does the selector .red style? (a) <span class="red"> (b) <span id="red"> (c) <p class="star"> (d) <span class="box">
40. 40.True or false: .big is an element selector. (a) True (b) False

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