CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 453 · 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: .note is an element selector. (a) False (b) True
2. 2.🎯 Which CSS selector matches this element?
   <li class="red" id="end">Hello</li> (a) .end (b) div (c) #hero (d) li
3. 3.True or false: .menu is a class selector. (a) True (b) False
4. 4.🎯 Which element does the selector .note style? (a) <span class="big"> (b) <p class="red"> (c) <span class="note"> (d) <span id="note">
5. 5.🎯 Which CSS selector matches this element?
   <li class="star" id="top">Hello</li> (a) .top (b) .menu (c) #star (d) #top
6. 6.🎯 Which element does the selector div style? (a) <div class="menu"> (b) <span> (c) <p class="menu"> (d) <h1 id="top">
7. 7.🎯 Which element does the selector #logo style? (a) <p class="logo"> (b) <p id="end"> (c) <h1 class="big"> (d) <p id="logo">
8. 8.True or false: #main is an element selector. (a) False (b) True
9. 9.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
10. 10.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) #top (b) .big (c) #note (d) #hero
11. 11.True or false: p is a class selector. (a) True (b) False
12. 12.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
13. 13.True or false: .big is a class selector. (a) False (b) True
14. 14.🎯 Which element does the selector #hero style? (a) <span id="top"> (b) <span class="hero"> (c) <span id="hero"> (d) <p class="red">
15. 15.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) #big (b) #main (c) .red (d) p
16. 16.True or false: li is a class selector. (a) True (b) False
17. 17.🎯 Which element does the selector #top style? (a) <h1 class="star"> (b) <p id="intro"> (c) <p class="top"> (d) <p id="top">
18. 18.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
19. 19.True or false: #logo is an id selector. (a) True (b) False
20. 20.🎯 Which element does the selector .box style? (a) <div class="menu"> (b) <li class="box"> (c) <li class="star"> (d) <li id="box">
21. 21.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
22. 22.True or false: img is an id selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) .box (b) .top (c) #box (d) li
24. 24.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) #intro (b) #red (c) #main (d) p
25. 25.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) h2 (b) li (c) .big (d) #hero
27. 27.🎯 Which element does the selector .red style? (a) <h2 class="box"> (b) <h2 id="red"> (c) <li class="star"> (d) <h2 class="red">
28. 28.True or false: #end is a class selector. (a) True (b) False
29. 29.🎯 Can many elements share the same class? (a) No (b) Yes
30. 30.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
31. 31.🎯 Which element does the selector h2 style? (a) <h2 class="big"> (b) <li> (c) <div class="big"> (d) <span id="top">
32. 32.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
33. 33.True or false: .menu is an id selector. (a) False (b) True
34. 34.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
35. 35.True or false: #logo is a class selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) #main (b) .big (c) div (d) #note
37. 37.🎯 Which sign starts a class selector? (a) . (b) & (c) @ (d) #
38. 38.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
39. 39.🎯 Which element does the selector #hero style? (a) <h2 class="red"> (b) <h1 class="hero"> (c) <h1 id="top"> (d) <h1 id="hero">
40. 40.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) p (b) .main (c) .note (d) #logo

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