CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 128 · 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 p? (a) a class selector (b) an element selector (c) an id selector
2. 2.🎯 Which CSS selector matches this element?
   <li class="menu" id="top">Hello</li> (a) #menu (b) li (c) #intro (d) .top
3. 3.🎯 Which CSS selector matches this element?
   <li class="big" id="hero">Hello</li> (a) li (b) div (c) .red (d) #top
4. 4.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <h2 class="note"> (c) <div class="note"> (d) <li>
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="star" id="logo">Hello</h1> (a) #end (b) #star (c) h2 (d) h1
6. 6.🎯 Which element does the selector span style? (a) <h2 id="hero"> (b) <h1 class="star"> (c) <p> (d) <span class="star">
7. 7.True or false: #hero is an element selector. (a) True (b) False
8. 8.True or false: p is an element selector. (a) False (b) True
9. 9.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) #menu (b) .intro (c) #intro (d) p
11. 11.🎯 Which element does the selector .big style? (a) <h2 id="big"> (b) <h2 class="big"> (c) <h2 class="red"> (d) <li class="box">
12. 12.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
13. 13.True or false: #main is a class selector. (a) False (b) True
14. 14.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
15. 15.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
16. 16.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
17. 17.🎯 Which element does the selector .star style? (a) <div class="menu"> (b) <span class="note"> (c) <div class="star"> (d) <div id="star">
18. 18.True or false: #logo is an element selector. (a) True (b) False
19. 19.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
20. 20.🎯 Which element does the selector p style? (a) <p class="note"> (b) <li id="main"> (c) <h2 class="note"> (d) <h1>
21. 21.True or false: #hero is a class selector. (a) False (b) True
22. 22.🎯 Can many elements share the same class? (a) No (b) Yes
23. 23.True or false: .star is a class selector. (a) True (b) False
24. 24.🎯 Which element does the selector #hero style? (a) <h1 class="hero"> (b) <h1 id="top"> (c) <h1 id="hero"> (d) <h2 class="box">
25. 25.🎯 Which element does the selector #hero style? (a) <h2 id="hero"> (b) <h2 class="hero"> (c) <h2 id="top"> (d) <li class="note">
26. 26.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
27. 27.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="note"> (c) <h1 class="note"> (d) <div id="top">
28. 28.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
29. 29.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
30. 30.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) .big (b) .red (c) #hero (d) .end
31. 31.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) h1 (b) #big (c) .red (d) #hero
32. 32.🎯 Which element does the selector .note style? (a) <li class="note"> (b) <div class="red"> (c) <li class="big"> (d) <li id="note">
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) .menu (b) #star (c) .star (d) h2
34. 34.True or false: .card is a class selector. (a) True (b) False
35. 35.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
36. 36.True or false: .big is a class selector. (a) True (b) False
37. 37.🎯 Which element does the selector #end style? (a) <span id="hero"> (b) <p class="red"> (c) <span id="end"> (d) <span class="end">
38. 38.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <p class="red"> (c) <h1> (d) <h2 class="red">
39. 39.🎯 Which element does the selector .big style? (a) <span class="big"> (b) <span id="big"> (c) <span class="red"> (d) <p class="box">
40. 40.True or false: h1 is a class selector. (a) False (b) True

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