CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 581 · 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.True or false: li is a class selector. (a) False (b) True
2. 2.🎯 Can many elements share the same class? (a) No (b) Yes
3. 3.🎯 Which CSS selector matches this element?
   <p class="box" id="main">Hello</p> (a) .main (b) h1 (c) #box (d) p
4. 4.🎯 Which sign starts an id selector? (a) # (b) & (c) @ (d) .
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="star" id="intro">Hello</h1> (a) .menu (b) h2 (c) #main (d) #intro
6. 6.True or false: .menu is a class selector. (a) True (b) False
7. 7.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <p class="menu"> (c) <h1 class="note"> (d) <p class="star">
9. 9.🎯 Which CSS selector matches this element?
   <p class="box" id="hero">Hello</p> (a) .star (b) .box (c) h1 (d) .hero
10. 10.🎯 Which element does the selector #intro style? (a) <div class="red"> (b) <li id="intro"> (c) <li class="intro"> (d) <li id="main">
11. 11.True or false: .note is an element selector. (a) False (b) True
12. 12.🎯 Which element does the selector .star style? (a) <div class="note"> (b) <li class="star"> (c) <li id="star"> (d) <li class="menu">
13. 13.🎯 Which element does the selector .big style? (a) <li id="big"> (b) <li class="big"> (c) <li class="red"> (d) <div class="box">
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) #note (b) .intro (c) li (d) .note
15. 15.🎯 Which element does the selector #hero style? (a) <h2 class="star"> (b) <h1 id="top"> (c) <h1 class="hero"> (d) <h1 id="hero">
16. 16.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
17. 17.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="star" id="main">Hello</h2> (a) .main (b) .star (c) #star (d) #logo
19. 19.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) span (b) .intro (c) div (d) #red
20. 20.True or false: .note is a class selector. (a) False (b) True
21. 21.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) #logo (b) #big (c) .main (d) .big
22. 22.True or false: .big is an id selector. (a) False (b) True
23. 23.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h1 id="intro"> (c) <h1 id="top"> (d) <h2 class="star">
24. 24.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
25. 25.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) #menu (b) #main (c) .note (d) #logo
26. 26.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) #hero (b) .hero (c) #big (d) #top
27. 27.True or false: h1 is an element selector. (a) False (b) True
28. 28.True or false: .card is an element selector. (a) True (b) False
29. 29.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="intro"> (c) <h1 class="big"> (d) <li class="big">
30. 30.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
31. 31.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
32. 32.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .big (b) .top (c) .note (d) #intro
33. 33.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="big" id="main">Hello</h2> (a) .red (b) .main (c) #main (d) #logo
35. 35.True or false: .card is a class selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) p (b) #main (c) .big (d) #big
37. 37.🎯 Which element does the selector #intro style? (a) <h1 id="intro"> (b) <h1 class="intro"> (c) <h1 id="main"> (d) <h2 class="note">
38. 38.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) .big (b) #top (c) span (d) div
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) .star (b) #logo (c) .main (d) #main
40. 40.🎯 Which element does the selector .big style? (a) <p class="big"> (b) <p id="big"> (c) <h1 class="box"> (d) <p class="red">

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