CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 965 · 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 div style? (a) <span> (b) <div class="big"> (c) <h1 id="top"> (d) <p class="big">
2. 2.🎯 Which CSS selector matches this element?
   <div class="note" id="logo">Hello</div> (a) span (b) #note (c) div (d) .logo
3. 3.🎯 Which element does the selector .box style? (a) <h2 class="star"> (b) <li class="menu"> (c) <h2 id="box"> (d) <h2 class="box">
4. 4.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
5. 5.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
6. 6.True or false: .note is a class selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <div class="box" id="logo">Hello</div> (a) #end (b) #logo (c) .logo (d) span
8. 8.True or false: #logo is an id selector. (a) False (b) True
9. 9.🎯 Which element does the selector #hero style? (a) <span class="red"> (b) <div class="hero"> (c) <div id="top"> (d) <div id="hero">
10. 10.True or false: p is an element selector. (a) False (b) True
11. 11.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) .box (b) p (c) #red (d) #main
12. 12.True or false: body is a class selector. (a) False (b) True
13. 13.True or false: .big is a class selector. (a) False (b) True
14. 14.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) #top (b) h1 (c) p (d) #red
15. 15.🎯 Can many elements share the same class? (a) Yes (b) No
16. 16.🎯 Which CSS selector matches this element?
    <li class="box" id="end">Hello</li> (a) .end (b) #end (c) div (d) #hero
17. 17.🎯 Which element does the selector #main style? (a) <li class="box"> (b) <h2 id="logo"> (c) <h2 class="main"> (d) <h2 id="main">
18. 18.🎯 Which element does the selector div style? (a) <p class="star"> (b) <h1 id="top"> (c) <div class="star"> (d) <span>
19. 19.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) #menu (b) p (c) .note (d) .intro
20. 20.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
21. 21.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) h1 (b) .note (c) #note (d) .logo
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2> (a) li (b) #red (c) .logo (d) .red
23. 23.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .top (b) #note (c) .big (d) #top
24. 24.🎯 Which element does the selector #intro style? (a) <div id="main"> (b) <div class="intro"> (c) <span class="box"> (d) <div id="intro">
25. 25.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
26. 26.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
27. 27.🎯 Which element does the selector #end style? (a) <p id="end"> (b) <h1 class="red"> (c) <p id="hero"> (d) <p class="end">
28. 28.True or false: li is an element selector. (a) True (b) False
29. 29.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) #main (b) p (c) .intro (d) #intro
30. 30.🎯 Which element does the selector #top style? (a) <h1 id="intro"> (b) <h2 class="star"> (c) <h1 id="top"> (d) <h1 class="top">
31. 31.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) li (b) .menu (c) .logo (d) #logo
32. 32.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
33. 33.🎯 Which element does the selector #top style? (a) <li id="top"> (b) <li id="intro"> (c) <div class="note"> (d) <li class="top">
34. 34.True or false: p is a class selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) .end (b) .star (c) li (d) h2
36. 36.True or false: #hero is an id selector. (a) False (b) True
37. 37.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
38. 38.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
39. 39.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) #hero (b) #top (c) h1 (d) .menu
40. 40.🎯 Which element does the selector #intro style? (a) <h1 id="intro"> (b) <h2 class="note"> (c) <h1 id="main"> (d) <h1 class="intro">

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