CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 637 · 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 sign starts a class selector? (a) @ (b) . (c) # (d) &
2. 2.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
3. 3.🎯 Can many elements share the same class? (a) Yes (b) No
4. 4.🎯 Which CSS selector matches this element?
   <h2 class="note" id="logo">Hello</h2> (a) .big (b) li (c) .logo (d) .note
5. 5.🎯 Which element does the selector #end style? (a) <span id="end"> (b) <span id="hero"> (c) <p class="red"> (d) <span class="end">
6. 6.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
7. 7.🎯 Which CSS selector matches this element?
   <p class="note" id="top">Hello</p> (a) #intro (b) .top (c) #note (d) p
8. 8.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
9. 9.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
10. 10.🎯 Which element does the selector #intro style? (a) <div class="intro"> (b) <div id="main"> (c) <div id="intro"> (d) <span class="box">
11. 11.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
12. 12.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) #big (b) .big (c) div (d) .red
13. 13.True or false: body is an element selector. (a) True (b) False
14. 14.🎯 Which element does the selector .box style? (a) <div class="star"> (b) <div id="box"> (c) <span class="menu"> (d) <div class="box">
15. 15.🎯 Which element does the selector #end style? (a) <h1 class="end"> (b) <h1 id="hero"> (c) <h2 class="box"> (d) <h1 id="end">
16. 16.True or false: #main is an element selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) h1 (b) .end (c) h2 (d) #red
18. 18.🎯 Which element does the selector .box style? (a) <li class="menu"> (b) <h2 class="star"> (c) <h2 id="box"> (d) <h2 class="box">
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) #main (b) .intro (c) #box (d) h2
20. 20.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) .end (b) #big (c) h1 (d) #end
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) .end (b) h2 (c) .note (d) #note
22. 22.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) span (b) #menu (c) #main (d) .note
23. 23.True or false: p is an id selector. (a) True (b) False
24. 24.True or false: .card is a class selector. (a) False (b) True
25. 25.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) .menu (b) .main (c) .star (d) #star
27. 27.🎯 Which element does the selector div style? (a) <p class="note"> (b) <h1 id="intro"> (c) <span> (d) <div class="note">
28. 28.🎯 Which element does the selector .star style? (a) <li class="note"> (b) <h2 class="menu"> (c) <h2 id="star"> (d) <h2 class="star">
29. 29.True or false: #top is a class selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) .menu (b) .intro (c) p (d) #star
31. 31.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) li (b) .end (c) #end (d) #menu
32. 32.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
33. 33.🎯 Which element does the selector .note style? (a) <p class="note"> (b) <p id="note"> (c) <h1 class="red"> (d) <p class="big">
34. 34.True or false: .menu is a class selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) h1 (b) .main (c) #main (d) #star
36. 36.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
37. 37.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) 5 (d) any number
38. 38.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
39. 39.True or false: .card is an element selector. (a) True (b) False
40. 40.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector

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