CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 142 · 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 sign starts a class selector? (a) @ (b) # (c) & (d) .
2. 2.🎯 Which element does the selector #hero style? (a) <span class="star"> (b) <div id="top"> (c) <div id="hero"> (d) <div class="hero">
3. 3.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h2 class="menu"> (c) <h1 id="top"> (d) <h1 class="hero">
4. 4.🎯 Which element does the selector .menu style? (a) <span class="menu"> (b) <span class="note"> (c) <span id="menu"> (d) <p class="big">
5. 5.True or false: li is an element selector. (a) True (b) False
6. 6.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
7. 7.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
8. 8.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
9. 9.🎯 Which CSS selector matches this element?
   <li class="big" id="main">Hello</li> (a) li (b) #big (c) #logo (d) .red
10. 10.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 Can many elements share the same class? (a) No (b) Yes
12. 12.True or false: li is an id selector. (a) False (b) True
13. 13.True or false: .note is an element selector. (a) False (b) True
14. 14.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
15. 15.True or false: .card is a class selector. (a) False (b) True
16. 16.🎯 Which element does the selector h1 style? (a) <h1 class="big"> (b) <li class="big"> (c) <h2> (d) <div id="end">
17. 17.🎯 Which element does the selector h2 style? (a) <div class="box"> (b) <span id="main"> (c) <h2 class="box"> (d) <li>
18. 18.True or false: .menu is an id selector. (a) False (b) True
19. 19.True or false: .note is a class selector. (a) False (b) True
20. 20.🎯 Which CSS selector matches this element?
    <li class="star" id="top">Hello</li> (a) .top (b) #intro (c) li (d) #star
21. 21.🎯 Which element does the selector .star style? (a) <div class="star"> (b) <span class="note"> (c) <div id="star"> (d) <div class="menu">
22. 22.🎯 Which element does the selector .menu style? (a) <div class="menu"> (b) <div class="note"> (c) <span class="big"> (d) <div id="menu">
23. 23.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) #menu (b) .menu (c) #main (d) h1
24. 24.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
25. 25.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) h1 (b) p (c) .menu (d) #logo
26. 26.True or false: #end is a class selector. (a) False (b) True
27. 27.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
28. 28.🎯 Which element does the selector .red style? (a) <p id="red"> (b) <p class="box"> (c) <p class="red"> (d) <h1 class="star">
29. 29.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .note (b) #main (c) .intro (d) #intro
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?
    <h1 class="note" id="intro">Hello</h1> (a) #note (b) #main (c) #intro (d) .big
32. 32.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span> (a) #main (b) .star (c) #box (d) p
33. 33.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) div (b) #red (c) #hero (d) span
34. 34.True or false: #hero is an id selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) p (b) #big (c) .main (d) span
36. 36.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) .big (b) .note (c) .main (d) #logo
37. 37.True or false: #end is an element selector. (a) False (b) True
38. 38.True or false: #logo is a class selector. (a) True (b) False
39. 39.🎯 Which element does the selector #main style? (a) <p class="main"> (b) <p id="logo"> (c) <h1 class="note"> (d) <p id="main">
40. 40.🎯 Which element does the selector .note style? (a) <h1 class="big"> (b) <h2 class="red"> (c) <h1 class="note"> (d) <h1 id="note">

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