CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 929 · 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 element does the selector #top style? (a) <p id="intro"> (b) <p id="top"> (c) <h1 class="red"> (d) <p class="top">
2. 2.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
3. 3.🎯 Which CSS selector matches this element?
   <p class="big" id="hero">Hello</p> (a) .hero (b) .red (c) .big (d) #big
4. 4.🎯 Which CSS selector matches this element?
   <div class="box" id="top">Hello</div> (a) .top (b) #box (c) #top (d) .star
5. 5.🎯 Which element does the selector .red style? (a) <h2 class="box"> (b) <h2 id="red"> (c) <li class="star"> (d) <h2 class="red">
6. 6.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 Which element does the selector .red style? (a) <span class="star"> (b) <div class="red"> (c) <div id="red"> (d) <div class="box">
8. 8.🎯 Can many elements share the same class? (a) Yes (b) No
9. 9.🎯 Which element does the selector #end style? (a) <p id="hero"> (b) <h1 class="star"> (c) <p class="end"> (d) <p id="end">
10. 10.True or false: #main is an element selector. (a) False (b) True
11. 11.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
12. 12.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) span (b) .top (c) p (d) .star
13. 13.🎯 Which element does the selector p style? (a) <h1> (b) <li id="main"> (c) <h2 class="star"> (d) <p class="star">
14. 14.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span> (a) #main (b) #logo (c) p (d) .star
15. 15.True or false: #hero is an element selector. (a) False (b) True
16. 16.True or false: li is an id selector. (a) False (b) True
17. 17.🎯 Which element does the selector p style? (a) <h2 class="box"> (b) <li id="hero"> (c) <h1> (d) <p class="box">
18. 18.True or false: .note is a class selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) p (b) #logo (c) #box (d) .star
20. 20.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
21. 21.True or false: #end is an id selector. (a) False (b) True
22. 22.True or false: h1 is an id selector. (a) True (b) False
23. 23.True or false: .big is an element selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) #top (b) .big (c) h2 (d) .hero
25. 25.🎯 Which CSS selector matches this element?
    <span class="menu" id="end">Hello</span> (a) p (b) #hero (c) .end (d) .menu
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) h2 (b) .intro (c) .big (d) #big
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) .main (b) .box (c) h2 (d) .star
28. 28.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h1 class="red"> (c) <h1 id="big"> (d) <h2 class="box">
29. 29.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) p (b) #box (c) .star (d) span
30. 30.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
31. 31.🎯 Which element does the selector #intro style? (a) <h2 class="red"> (b) <h1 id="main"> (c) <h1 id="intro"> (d) <h1 class="intro">
32. 32.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
33. 33.True or false: li is an element selector. (a) False (b) True
34. 34.🎯 Which element does the selector #intro style? (a) <span class="star"> (b) <div id="main"> (c) <div class="intro"> (d) <div id="intro">
35. 35.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <div class="box"> (c) <li> (d) <h2 class="box">
36. 36.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li id="note"> (c) <li class="big"> (d) <li class="note">
37. 37.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) .top (b) #intro (c) p (d) .star
38. 38.🎯 Which element does the selector #top style? (a) <li class="note"> (b) <h2 id="top"> (c) <h2 id="intro"> (d) <h2 class="top">
39. 39.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) #box (b) div (c) .box (d) .star
40. 40.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) .menu (b) div (c) span (d) #intro

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