CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 136 · 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 .menu? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 Which CSS selector matches this element?
   <li class="note" id="end">Hello</li> (a) #hero (b) #note (c) li (d) .big
3. 3.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
4. 4.True or false: body is an id selector. (a) False (b) True
5. 5.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
6. 6.True or false: #top is an element selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="top">Hello</h2> (a) .top (b) #menu (c) #top (d) #intro
8. 8.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
9. 9.True or false: .big is a class selector. (a) False (b) True
10. 10.True or false: #main is an element selector. (a) False (b) True
11. 11.🎯 Which element does the selector li style? (a) <span class="big"> (b) <div> (c) <p id="logo"> (d) <li class="big">
12. 12.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
13. 13.🎯 Can many elements share the same class? (a) Yes (b) No
14. 14.🎯 Which element does the selector p style? (a) <h1> (b) <li id="intro"> (c) <h2 class="note"> (d) <p class="note">
15. 15.🎯 Which element does the selector p style? (a) <li id="end"> (b) <h2 class="big"> (c) <h1> (d) <p class="big">
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1> (a) .star (b) h2 (c) #star (d) #top
17. 17.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <div id="end"> (c) <h1 class="star"> (d) <h2>
18. 18.🎯 Which element does the selector #main style? (a) <span id="logo"> (b) <span id="main"> (c) <p class="menu"> (d) <span class="main">
19. 19.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 1 (d) 5
20. 20.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
21. 21.🎯 Which element does the selector .red style? (a) <h2 id="red"> (b) <h2 class="box"> (c) <h2 class="red"> (d) <li class="star">
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) .menu (b) h2 (c) #star (d) h1
23. 23.True or false: .card is an id selector. (a) True (b) False
24. 24.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) .box (b) .star (c) #box (d) #main
25. 25.True or false: img is a class selector. (a) False (b) True
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) #main (b) #star (c) .star (d) h2
27. 27.True or false: #top is an id selector. (a) True (b) False
28. 28.True or false: h1 is an element selector. (a) True (b) False
29. 29.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p id="top"> (c) <h1 class="red"> (d) <p class="top">
30. 30.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
31. 31.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) #intro (b) #red (c) .top (d) #top
32. 32.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
33. 33.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) .box (b) .intro (c) li (d) #main
34. 34.🎯 Which element does the selector .note style? (a) <li id="note"> (b) <li class="big"> (c) <div class="red"> (d) <li class="note">
35. 35.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
36. 36.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) .main (b) .star (c) span (d) .box
37. 37.True or false: .note is a class selector. (a) False (b) True
38. 38.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
39. 39.True or false: li is an element selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) .box (b) .top (c) #red (d) h2

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