CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 921 · 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?
   <p class="box" id="main">Hello</p> (a) .star (b) .main (c) h1 (d) .box
2. 2.True or false: .note is an element selector. (a) True (b) False
3. 3.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
4. 4.True or false: #hero is an id selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <p class="note" id="top">Hello</p> (a) .big (b) #intro (c) p (d) h1
6. 6.🎯 Which element does the selector div style? (a) <div class="big"> (b) <p class="big"> (c) <span> (d) <h1 id="end">
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="box" id="top">Hello</h2> (a) h2 (b) #intro (c) #box (d) .top
8. 8.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
9. 9.🎯 Which CSS selector matches this element?
   <div class="box" id="top">Hello</div> (a) #box (b) .top (c) #top (d) #intro
10. 10.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) #hero (b) #box (c) h1 (d) .hero
11. 11.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) #intro (b) .intro (c) #red (d) #main
12. 12.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
13. 13.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) #main (b) #big (c) .main (d) .red
14. 14.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
15. 15.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) h1 (b) .intro (c) .red (d) #main
17. 17.🎯 Can many elements share the same class? (a) No (b) Yes
18. 18.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) .big (b) .red (c) #big (d) #top
19. 19.🎯 Which element does the selector .note style? (a) <div class="big"> (b) <span class="red"> (c) <div id="note"> (d) <div class="note">
20. 20.🎯 Which element does the selector .menu style? (a) <h2 class="note"> (b) <h2 class="menu"> (c) <h2 id="menu"> (d) <li class="big">
21. 21.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
22. 22.🎯 Which element does the selector div style? (a) <h1 id="end"> (b) <span> (c) <div class="star"> (d) <p class="star">
23. 23.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) #note (b) #intro (c) #main (d) .big
25. 25.True or false: #end is an element selector. (a) False (b) True
26. 26.True or false: #hero is a class selector. (a) False (b) True
27. 27.🎯 Which element does the selector .red style? (a) <h1 class="star"> (b) <p id="red"> (c) <p class="box"> (d) <p class="red">
28. 28.True or false: .note is an id selector. (a) False (b) True
29. 29.🎯 Which element does the selector .menu style? (a) <li id="menu"> (b) <li class="note"> (c) <div class="big"> (d) <li class="menu">
30. 30.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) span (b) .red (c) .top (d) #red
31. 31.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h2 class="menu"> (c) <h1 class="hero"> (d) <h1 id="top">
32. 32.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) h1 (b) p (c) .star (d) #intro
33. 33.🎯 Which element does the selector p style? (a) <h2 class="big"> (b) <li id="end"> (c) <p class="big"> (d) <h1>
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) #box (b) .box (c) li (d) .top
35. 35.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) div (b) #red (c) li (d) .end
36. 36.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) p (b) #main (c) .intro (d) .box
37. 37.True or false: p is an id selector. (a) False (b) True
38. 38.True or false: img is an element selector. (a) True (b) False
39. 39.True or false: li is an element selector. (a) True (b) False
40. 40.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector

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