CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 989 · 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 an id selector? (a) @ (b) . (c) & (d) #
2. 2.True or false: #top is an id selector. (a) False (b) True
3. 3.True or false: .note is a class selector. (a) False (b) True
4. 4.🎯 Which element does the selector .menu style? (a) <p class="note"> (b) <p class="menu"> (c) <h1 class="big"> (d) <p id="menu">
5. 5.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <h1> (c) <li id="logo"> (d) <p class="star">
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="end">Hello</h1> (a) .note (b) .menu (c) #menu (d) #hero
7. 7.🎯 Which CSS selector matches this element?
   <span class="note" id="end">Hello</span> (a) #end (b) #hero (c) .big (d) #note
8. 8.🎯 Which CSS selector matches this element?
   <p class="red" id="hero">Hello</p> (a) h1 (b) #hero (c) #red (d) .box
9. 9.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Can many elements share the same class? (a) Yes (b) No
11. 11.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="hero"> (c) <li class="star"> (d) <h1 class="star">
12. 12.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .top (b) #note (c) p (d) #intro
13. 13.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <div class="star"> (c) <li class="box"> (d) <li class="red">
14. 14.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) #note (b) .big (c) .end (d) h1
16. 16.🎯 Which element does the selector #end style? (a) <h1 class="big"> (b) <p class="end"> (c) <p id="end"> (d) <p id="hero">
17. 17.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
18. 18.True or false: #end is an element selector. (a) True (b) False
19. 19.True or false: #end is a class selector. (a) True (b) False
20. 20.True or false: #logo is an id selector. (a) False (b) True
21. 21.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
22. 22.True or false: .card is a class selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) #intro (b) .top (c) div (d) #top
24. 24.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <h2 class="intro"> (c) <li class="big"> (d) <h2 id="intro">
25. 25.True or false: li is an element selector. (a) False (b) True
26. 26.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
27. 27.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) span (b) #big (c) #main (d) .red
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) .main (b) .note (c) #logo (d) .big
29. 29.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) span (b) #note (c) #main (d) .big
30. 30.True or false: img is an id selector. (a) False (b) True
31. 31.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) li (b) #star (c) .logo (d) h2
33. 33.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="main"> (c) <div class="note"> (d) <h2 class="note">
34. 34.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 5 (d) 2
35. 35.True or false: li is a class selector. (a) True (b) False
36. 36.🎯 Which element does the selector .star style? (a) <h1 id="star"> (b) <h2 class="note"> (c) <h1 class="menu"> (d) <h1 class="star">
37. 37.True or false: .big is an element selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) p (b) .star (c) .top (d) .box
39. 39.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) #note (b) .big (c) .logo (d) p
40. 40.🎯 Which element does the selector .big style? (a) <span id="big"> (b) <p class="box"> (c) <span class="red"> (d) <span class="big">

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