CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 900 · 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 h2 style? (a) <h2 class="note"> (b) <li> (c) <span id="end"> (d) <div class="note">
2. 2.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
3. 3.True or false: h1 is an element selector. (a) True (b) False
4. 4.🎯 Which CSS selector matches this element?
   <p class="note" id="top">Hello</p> (a) .big (b) #top (c) #intro (d) h1
5. 5.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <h2 class="box"> (c) <p class="box"> (d) <h1>
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) .intro (b) #main (c) .big (d) #intro
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="star" id="main">Hello</h1> (a) .menu (b) #star (c) #main (d) #logo
8. 8.🎯 Which CSS selector matches this element?
   <span class="note" id="intro">Hello</span> (a) .intro (b) #note (c) span (d) .big
9. 9.🎯 Which element does the selector .note style? (a) <h2 id="note"> (b) <h2 class="big"> (c) <h2 class="note"> (d) <li class="red">
10. 10.🎯 Which element does the selector p style? (a) <p class="note"> (b) <li id="logo"> (c) <h1> (d) <h2 class="note">
11. 11.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) #hero (b) #end (c) h1 (d) #box
12. 12.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) #main (b) .note (c) #note (d) h1
13. 13.True or false: h1 is a class selector. (a) True (b) False
14. 14.🎯 Which element does the selector .big style? (a) <p class="red"> (b) <h1 class="box"> (c) <p class="big"> (d) <p id="big">
15. 15.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
16. 16.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) p (b) .star (c) #hero (d) #end
18. 18.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
19. 19.True or false: #top is a class selector. (a) True (b) False
20. 20.🎯 Which element does the selector .big style? (a) <div id="big"> (b) <div class="big"> (c) <span class="box"> (d) <div class="red">
21. 21.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
22. 22.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) #big (b) div (c) .hero (d) #top
23. 23.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
24. 24.True or false: h1 is an id selector. (a) False (b) True
25. 25.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) .big (b) #hero (c) #end (d) #note
26. 26.🎯 Which CSS selector matches this element?
    <span class="red" id="end">Hello</span> (a) #hero (b) p (c) span (d) #red
27. 27.🎯 Can many elements share the same class? (a) No (b) Yes
28. 28.🎯 Which CSS selector matches this element?
    <p class="star" id="end">Hello</p> (a) .star (b) .end (c) #star (d) #hero
29. 29.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <div id="hero"> (c) <span class="menu"> (d) <div id="end">
30. 30.🎯 Which element does the selector .menu style? (a) <h1 class="note"> (b) <h1 id="menu"> (c) <h2 class="big"> (d) <h1 class="menu">
31. 31.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
32. 32.True or false: .note is a class selector. (a) False (b) True
33. 33.🎯 Which element does the selector span style? (a) <h2 id="hero"> (b) <p> (c) <h1 class="red"> (d) <span class="red">
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) li (b) h2 (c) .main (d) #note
35. 35.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) .intro (b) .box (c) #intro (d) #main
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) #big (b) .big (c) .logo (d) h2
37. 37.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) .big (b) h1 (c) .end (d) .note
38. 38.🎯 Which element does the selector span style? (a) <h2 id="main"> (b) <p> (c) <h1 class="box"> (d) <span class="box">
39. 39.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) #note (b) #intro (c) .big (d) .intro
40. 40.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5

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