CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 414 · 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 #intro style? (a) <h1 class="box"> (b) <p id="main"> (c) <p id="intro"> (d) <p class="intro">
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="star" id="top">Hello</h1> (a) h1 (b) h2 (c) .menu (d) #star
3. 3.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
4. 4.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <div class="note"> (c) <h2 class="note"> (d) <li>
5. 5.🎯 Which CSS selector matches this element?
   <li class="note" id="logo">Hello</li> (a) .logo (b) #logo (c) div (d) #end
6. 6.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
7. 7.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
8. 8.🎯 Can many elements share the same class? (a) Yes (b) No
9. 9.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="menu"> (c) <li class="menu"> (d) <div id="intro">
10. 10.True or false: .big is a class selector. (a) True (b) False
11. 11.🎯 Which element does the selector .big style? (a) <div class="red"> (b) <div class="big"> (c) <span class="box"> (d) <div id="big">
12. 12.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <div id="end"> (c) <span class="note"> (d) <div id="hero">
13. 13.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
14. 14.🎯 Which element does the selector .note style? (a) <h2 class="big"> (b) <h2 id="note"> (c) <h2 class="note"> (d) <li class="red">
15. 15.🎯 Which element does the selector p style? (a) <p class="red"> (b) <li id="top"> (c) <h2 class="red"> (d) <h1>
16. 16.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
17. 17.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
18. 18.True or false: #hero is a class selector. (a) True (b) False
19. 19.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) .note (b) #end (c) #logo (d) #menu
20. 20.🎯 Which element does the selector #top style? (a) <div class="menu"> (b) <li class="top"> (c) <li id="intro"> (d) <li id="top">
21. 21.🎯 Which element does the selector p style? (a) <h2 class="note"> (b) <li id="end"> (c) <p class="note"> (d) <h1>
22. 22.True or false: p is an element selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) li (b) .top (c) #box (d) div
24. 24.🎯 Which element does the selector div style? (a) <span> (b) <div class="big"> (c) <h1 id="main"> (d) <p class="big">
25. 25.True or false: .menu is a class selector. (a) False (b) True
26. 26.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h1 id="logo"> (c) <h1 id="main"> (d) <h2 class="red">
27. 27.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
28. 28.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
29. 29.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) li (b) #big (c) .red (d) .big
31. 31.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) h1 (b) .main (c) #note (d) .note
32. 32.🎯 Which element does the selector #logo style? (a) <h2 id="end"> (b) <h2 id="logo"> (c) <h2 class="logo"> (d) <li class="star">
33. 33.True or false: .card is a class selector. (a) True (b) False
34. 34.🎯 Which element does the selector .star style? (a) <h1 class="star"> (b) <h2 class="note"> (c) <h1 id="star"> (d) <h1 class="menu">
35. 35.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="menu"> (c) <li id="intro"> (d) <p class="menu">
36. 36.🎯 Which element does the selector .star style? (a) <h1 class="note"> (b) <p class="star"> (c) <p id="star"> (d) <p class="menu">
37. 37.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) #note (b) .note (c) .intro (d) .big
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) li (b) .logo (c) #logo (d) .big
39. 39.True or false: #logo is an id selector. (a) False (b) True
40. 40.True or false: #main is a class selector. (a) True (b) False

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