CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 911 · 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.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
2. 2.True or false: #top is an id selector. (a) False (b) True
3. 3.🎯 Which element does the selector .menu style? (a) <h1 class="note"> (b) <h2 class="big"> (c) <h1 class="menu"> (d) <h1 id="menu">
4. 4.True or false: li is an id selector. (a) False (b) True
5. 5.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h2> (c) <h1 class="note"> (d) <div id="logo">
6. 6.🎯 Which CSS selector matches this element?
   <div class="box" id="hero">Hello</div> (a) #top (b) .hero (c) div (d) #box
7. 7.🎯 Which element does the selector li style? (a) <div> (b) <li class="menu"> (c) <p id="hero"> (d) <span class="menu">
8. 8.🎯 Which CSS selector matches this element?
   <li class="note" id="hero">Hello</li> (a) #hero (b) .hero (c) #note (d) #top
9. 9.🎯 Which element does the selector #hero style? (a) <li class="hero"> (b) <li id="hero"> (c) <li id="top"> (d) <div class="box">
10. 10.🎯 Which element does the selector .menu style? (a) <div class="big"> (b) <li class="note"> (c) <li class="menu"> (d) <li id="menu">
11. 11.True or false: p is a class selector. (a) True (b) False
12. 12.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
13. 13.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
14. 14.True or false: #end is an id selector. (a) False (b) True
15. 15.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
16. 16.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
17. 17.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) #menu (b) h2 (c) #hero (d) #top
19. 19.🎯 Can many elements share the same class? (a) Yes (b) No
20. 20.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) .big (b) .top (c) div (d) #intro
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1> (a) h1 (b) #menu (c) .note (d) #hero
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) #intro (b) #red (c) .red (d) .top
23. 23.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
24. 24.🎯 Which element does the selector .note style? (a) <div class="big"> (b) <span class="red"> (c) <div id="note"> (d) <div class="note">
25. 25.🎯 Which element does the selector li style? (a) <li class="red"> (b) <span class="red"> (c) <p id="end"> (d) <div>
26. 26.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <p class="star"> (c) <span class="box"> (d) <span class="red">
27. 27.True or false: .star is a class selector. (a) False (b) True
28. 28.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
29. 29.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
30. 30.True or false: .note is a class selector. (a) False (b) True
31. 31.🎯 Which sign starts a class selector? (a) . (b) # (c) & (d) @
32. 32.🎯 Which element does the selector .box style? (a) <p class="star"> (b) <p id="box"> (c) <p class="box"> (d) <h1 class="menu">
33. 33.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1> (a) #hero (b) h2 (c) h1 (d) #box
35. 35.True or false: #logo is an id selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) span (b) .box (c) p (d) #red
37. 37.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
38. 38.True or false: h1 is an element selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) .note (b) div (c) #menu (d) .top
40. 40.🎯 Which CSS selector matches this element?
    <li class="star" id="end">Hello</li> (a) #star (b) .end (c) .menu (d) li

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