CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 702 · 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 an id selector? (a) & (b) . (c) @ (d) #
2. 2.🎯 Which CSS selector matches this element?
   <p class="star" id="top">Hello</p> (a) h1 (b) .menu (c) .top (d) #top
3. 3.🎯 Which element does the selector #intro style? (a) <h1 class="intro"> (b) <h1 id="intro"> (c) <h2 class="menu"> (d) <h1 id="main">
4. 4.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
5. 5.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
6. 6.True or false: #main is an element selector. (a) True (b) False
7. 7.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 Which element does the selector #hero style? (a) <h2 class="red"> (b) <h1 class="hero"> (c) <h1 id="hero"> (d) <h1 id="top">
9. 9.🎯 Which element does the selector p style? (a) <li id="end"> (b) <h2 class="menu"> (c) <h1> (d) <p class="menu">
10. 10.🎯 Which element does the selector .star style? (a) <div class="menu"> (b) <div class="star"> (c) <div id="star"> (d) <span class="note">
11. 11.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
12. 12.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
13. 13.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) .box (b) .main (c) h1 (d) .red
14. 14.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="main"> (c) <h2 class="box"> (d) <div class="box">
15. 15.True or false: #main is an id selector. (a) False (b) True
16. 16.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) .logo (b) #star (c) #logo (d) div
17. 17.True or false: .menu is an id selector. (a) False (b) True
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) #end (b) .star (c) li (d) h2
19. 19.True or false: h1 is an id selector. (a) True (b) False
20. 20.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) p (b) .big (c) span (d) #note
21. 21.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
22. 22.🎯 Which element does the selector .note style? (a) <li class="red"> (b) <h2 class="big"> (c) <h2 id="note"> (d) <h2 class="note">
23. 23.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
24. 24.🎯 Which element does the selector #intro style? (a) <span class="intro"> (b) <span id="intro"> (c) <span id="main"> (d) <p class="note">
25. 25.True or false: .note is an id selector. (a) False (b) True
26. 26.🎯 Can many elements share the same class? (a) Yes (b) No
27. 27.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
28. 28.True or false: body is a class selector. (a) True (b) False
29. 29.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
30. 30.True or false: #hero is an id selector. (a) False (b) True
31. 31.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) #star (b) #logo (c) span (d) #main
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) .end (b) .menu (c) .note (d) #menu
33. 33.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) #big (b) p (c) h1 (d) .intro
34. 34.🎯 Which element does the selector p style? (a) <li id="logo"> (b) <h2 class="box"> (c) <p class="box"> (d) <h1>
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) #logo (b) .logo (c) #note (d) .big
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) #end (b) #hero (c) h2 (d) #red
37. 37.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) .main (b) h1 (c) .note (d) h2
39. 39.True or false: img is an element selector. (a) False (b) True
40. 40.True or false: #hero is an element selector. (a) True (b) False

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