CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 434 · 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 #end? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
3. 3.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
4. 4.True or false: img is a class selector. (a) True (b) False
5. 5.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
6. 6.🎯 Which CSS selector matches this element?
   <span class="red" id="logo">Hello</span> (a) #end (b) #red (c) #logo (d) .logo
7. 7.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
9. 9.🎯 Which element does the selector #intro style? (a) <span id="intro"> (b) <p class="big"> (c) <span id="main"> (d) <span class="intro">
10. 10.True or false: .card is an element selector. (a) True (b) False
11. 11.True or false: #end is an id selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) .big (b) .red (c) #big (d) span
13. 13.True or false: p is an element selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) #menu (b) .note (c) #main (d) #logo
15. 15.True or false: body is an element selector. (a) False (b) True
16. 16.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <h2 class="note"> (c) <p class="note"> (d) <h1>
17. 17.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
18. 18.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
19. 19.🎯 Which element does the selector #top style? (a) <p class="top"> (b) <h1 class="menu"> (c) <p id="intro"> (d) <p id="top">
20. 20.🎯 Can many elements share the same class? (a) Yes (b) No
21. 21.🎯 Which element does the selector .menu style? (a) <span id="menu"> (b) <p class="big"> (c) <span class="menu"> (d) <span class="note">
22. 22.True or false: #logo is an element selector. (a) False (b) True
23. 23.True or false: .big is an element selector. (a) True (b) False
24. 24.🎯 Which element does the selector p style? (a) <li id="top"> (b) <p class="big"> (c) <h1> (d) <h2 class="big">
25. 25.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) .big (b) .hero (c) p (d) #top
26. 26.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
27. 27.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="top"> (c) <h1 class="star"> (d) <span class="star">
28. 28.True or false: body is a class selector. (a) True (b) False
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) h2 (b) #logo (c) .box (d) h1
30. 30.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="hero"> (c) <div class="note"> (d) <h2 class="note">
31. 31.🎯 Which element does the selector h1 style? (a) <h1 class="star"> (b) <div id="top"> (c) <h2> (d) <li class="star">
32. 32.🎯 Which element does the selector span style? (a) <span class="big"> (b) <p> (c) <h2 id="top"> (d) <h1 class="big">
33. 33.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
34. 34.🎯 Which element does the selector #logo style? (a) <p class="star"> (b) <span class="logo"> (c) <span id="end"> (d) <span id="logo">
35. 35.🎯 Which element does the selector div style? (a) <div class="star"> (b) <span> (c) <p class="star"> (d) <h1 id="hero">
36. 36.True or false: .menu is a class selector. (a) False (b) True
37. 37.🎯 Which element does the selector #end style? (a) <li id="hero"> (b) <li id="end"> (c) <div class="star"> (d) <li class="end">
38. 38.True or false: body is an id selector. (a) True (b) False
39. 39.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
40. 40.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) .red (b) #hero (c) .end (d) #end

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