CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 390 · 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?
   <span class="red" id="top">Hello</span> (a) #top (b) #red (c) p (d) #intro
2. 2.🎯 Which element does the selector .star style? (a) <div class="menu"> (b) <div id="star"> (c) <div class="star"> (d) <span class="note">
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="big" id="hero">Hello</h2> (a) #hero (b) #top (c) .red (d) .hero
4. 4.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
5. 5.True or false: #top is an id selector. (a) False (b) True
6. 6.🎯 Which CSS selector matches this element?
   <p class="star" id="intro">Hello</p> (a) .star (b) #star (c) .menu (d) #main
7. 7.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="red"> (c) <h1 class="red"> (d) <div id="hero">
8. 8.🎯 Which CSS selector matches this element?
   <span class="note" id="top">Hello</span> (a) #note (b) .note (c) .big (d) .top
9. 9.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
10. 10.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="star"> (c) <div id="intro"> (d) <h1 class="star">
11. 11.True or false: .note is an id selector. (a) False (b) True
12. 12.🎯 Can many elements share the same class? (a) No (b) Yes
13. 13.True or false: #end is a class selector. (a) True (b) False
14. 14.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
15. 15.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) .red (b) p (c) #main (d) #big
16. 16.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 1 (d) 5
17. 17.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) .menu (b) #top (c) p (d) #star
18. 18.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .intro (b) li (c) div (d) #menu
19. 19.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
20. 20.🎯 Which element does the selector .star style? (a) <span class="menu"> (b) <p class="note"> (c) <span id="star"> (d) <span class="star">
21. 21.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
22. 22.True or false: .big is an element selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) #red (b) #main (c) .red (d) h2
24. 24.🎯 Which element does the selector h1 style? (a) <li class="menu"> (b) <h2> (c) <h1 class="menu"> (d) <div id="end">
25. 25.True or false: p is an element selector. (a) True (b) False
26. 26.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="big"> (c) <span class="big"> (d) <h2 id="hero">
27. 27.🎯 Which element does the selector .big style? (a) <p class="box"> (b) <span id="big"> (c) <span class="red"> (d) <span class="big">
28. 28.True or false: #top is a class selector. (a) True (b) False
29. 29.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <p> (c) <h2 id="intro"> (d) <span class="box">
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="hero">Hello</h2> (a) .hero (b) #menu (c) li (d) h2
31. 31.🎯 Which element does the selector #end style? (a) <li class="end"> (b) <li id="hero"> (c) <div class="big"> (d) <li id="end">
32. 32.True or false: li is a class selector. (a) True (b) False
33. 33.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
34. 34.🎯 Which element does the selector .big style? (a) <h2 class="red"> (b) <h2 class="big"> (c) <li class="box"> (d) <h2 id="big">
35. 35.True or false: #main is an id selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) .big (b) #logo (c) #main (d) .main
37. 37.True or false: .star is an element selector. (a) False (b) True
38. 38.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <span class="note"> (c) <div> (d) <li class="note">
39. 39.True or false: .menu is an id selector. (a) True (b) False
40. 40.True or false: #main is a class selector. (a) True (b) False

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