CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 790 · 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?
   <h1 class="menu" id="top">Hello</h1> (a) .menu (b) h2 (c) #menu (d) .top
2. 2.🎯 Which element does the selector .note style? (a) <h1 class="note"> (b) <h1 id="note"> (c) <h1 class="big"> (d) <h2 class="red">
3. 3.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <h2 class="red"> (c) <div class="red"> (d) <li>
4. 4.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="big"> (c) <li id="intro"> (d) <p class="big">
6. 6.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="big" id="main">Hello</h2> (a) li (b) #big (c) .main (d) #main
9. 9.True or false: .menu is a class selector. (a) True (b) False
10. 10.🎯 Which element does the selector #top style? (a) <h1 class="box"> (b) <p class="top"> (c) <p id="intro"> (d) <p id="top">
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) h2 (b) h1 (c) .end (d) .red
12. 12.🎯 Which sign starts a class selector? (a) & (b) @ (c) . (d) #
13. 13.True or false: .card is a class selector. (a) False (b) True
14. 14.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) #red (b) h2 (c) .red (d) #top
15. 15.True or false: #top is a class selector. (a) True (b) False
16. 16.🎯 Which element does the selector div style? (a) <h1 id="logo"> (b) <div class="big"> (c) <p class="big"> (d) <span>
17. 17.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #box (b) #intro (c) p (d) .star
18. 18.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
19. 19.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) .top (b) #intro (c) #top (d) #big
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2> (a) .intro (b) .box (c) h2 (d) #main
21. 21.🎯 Which element does the selector span style? (a) <h2 id="intro"> (b) <h1 class="note"> (c) <span class="note"> (d) <p>
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) .star (b) h1 (c) #box (d) #top
23. 23.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="end"> (c) <span class="box"> (d) <h1 class="box">
24. 24.True or false: .menu is an element selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1> (a) .menu (b) #top (c) .hero (d) h1
26. 26.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) span (b) #intro (c) #top (d) .star
27. 27.🎯 Which element does the selector #main style? (a) <span class="main"> (b) <span id="logo"> (c) <span id="main"> (d) <p class="box">
28. 28.True or false: #end is an id selector. (a) False (b) True
29. 29.🎯 Can many elements share the same class? (a) No (b) Yes
30. 30.True or false: .star is a class selector. (a) True (b) False
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) #menu (b) .menu (c) .main (d) #logo
32. 32.🎯 Which element does the selector .star style? (a) <li id="star"> (b) <li class="menu"> (c) <li class="star"> (d) <div class="note">
33. 33.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
34. 34.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
35. 35.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) div (b) .menu (c) .star (d) .intro
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) #note (b) h2 (c) .note (d) .big
37. 37.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) .red (b) .box (c) p (d) #red
38. 38.🎯 Which element does the selector #end style? (a) <span class="end"> (b) <p class="big"> (c) <span id="hero"> (d) <span id="end">
39. 39.True or false: li is a class selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) .note (b) #note (c) .main (d) #logo

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