CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 129 · 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: p is a class selector. (a) False (b) True
2. 2.🎯 Which CSS selector matches this element?
   <span class="star" id="main">Hello</span> (a) span (b) .main (c) #logo (d) p
3. 3.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
4. 4.🎯 Which CSS selector matches this element?
   <p class="big" id="hero">Hello</p> (a) .hero (b) #big (c) #hero (d) #top
5. 5.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
6. 6.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="note" id="main">Hello</h2> (a) .big (b) h2 (c) li (d) #note
8. 8.🎯 Which CSS selector matches this element?
   <span class="box" id="top">Hello</span> (a) .star (b) span (c) #box (d) .top
9. 9.🎯 Which element does the selector .menu style? (a) <h1 class="big"> (b) <p id="menu"> (c) <p class="note"> (d) <p class="menu">
10. 10.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) p (b) #red (c) .red (d) .top
12. 12.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) #big (b) li (c) .red (d) #top
13. 13.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
14. 14.🎯 Which element does the selector span style? (a) <span class="menu"> (b) <h1 class="menu"> (c) <p> (d) <h2 id="main">
15. 15.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
16. 16.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
17. 17.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) .main (b) h1 (c) #main (d) #red
18. 18.🎯 Which element does the selector #intro style? (a) <h1 class="intro"> (b) <h1 id="intro"> (c) <h2 class="star"> (d) <h1 id="main">
19. 19.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) #logo (b) #main (c) div (d) #note
20. 20.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p class="top"> (c) <p id="top"> (d) <h1 class="red">
21. 21.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <span id="end"> (c) <li> (d) <h2 class="red">
22. 22.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
23. 23.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="top"> (c) <li class="menu"> (d) <h1 class="menu">
24. 24.True or false: #hero is an id selector. (a) False (b) True
25. 25.True or false: #main is an element selector. (a) True (b) False
26. 26.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
27. 27.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <span id="intro"> (c) <span class="intro"> (d) <p class="red">
28. 28.🎯 Which element does the selector .box style? (a) <li class="box"> (b) <li class="star"> (c) <li id="box"> (d) <div class="menu">
29. 29.True or false: body is a class selector. (a) True (b) False
30. 30.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
31. 31.🎯 Which CSS selector matches this element?
    <li class="menu" id="end">Hello</li> (a) li (b) div (c) .end (d) #hero
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) .big (b) h2 (c) h1 (d) #top
33. 33.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <p id="intro"> (c) <p class="intro"> (d) <h1 class="box">
34. 34.True or false: #hero is an element selector. (a) False (b) True
35. 35.🎯 Can many elements share the same class? (a) No (b) Yes
36. 36.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
37. 37.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) #main (b) #big (c) span (d) .intro
38. 38.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="top"> (c) <div class="box"> (d) <p class="box">
39. 39.🎯 Which element does the selector div style? (a) <h1 id="hero"> (b) <span> (c) <p class="menu"> (d) <div class="menu">
40. 40.True or false: img is an element selector. (a) False (b) True

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