CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 808 · 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 id="intro"> (b) <h2 class="menu"> (c) <h1 class="intro"> (d) <h1 id="main">
2. 2.🎯 Can many elements share the same class? (a) Yes (b) No
3. 3.True or false: .note is an id selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <p class="note" id="main">Hello</p> (a) #logo (b) p (c) .main (d) .big
5. 5.🎯 Which CSS selector matches this element?
   <div class="big" id="top">Hello</div> (a) span (b) #big (c) #intro (d) .big
6. 6.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) h1 (b) h2 (c) .big (d) #main
8. 8.🎯 Which element does the selector .red style? (a) <div id="red"> (b) <span class="star"> (c) <div class="box"> (d) <div class="red">
9. 9.True or false: body is a class selector. (a) False (b) True
10. 10.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
11. 11.🎯 Which element does the selector #logo style? (a) <p id="end"> (b) <h1 class="box"> (c) <p id="logo"> (d) <p class="logo">
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) .big (b) .main (c) #logo (d) #main
13. 13.🎯 Which element does the selector .big style? (a) <h2 class="big"> (b) <li class="box"> (c) <h2 id="big"> (d) <h2 class="red">
14. 14.True or false: #end is an id selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) #star (b) #logo (c) .star (d) .menu
16. 16.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span> (a) .star (b) .box (c) #logo (d) p
17. 17.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) .red (b) h1 (c) #big (d) .big
18. 18.True or false: .star is an id selector. (a) True (b) False
19. 19.🎯 Which element does the selector .big style? (a) <h1 class="red"> (b) <h1 class="big"> (c) <h2 class="box"> (d) <h1 id="big">
20. 20.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) .star (b) p (c) #hero (d) .box
21. 21.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) p (b) #logo (c) #main (d) .main
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) #big (b) #hero (c) h1 (d) .red
23. 23.True or false: .menu is a class selector. (a) True (b) False
24. 24.🎯 Which CSS selector matches this element?
    <div class="star" id="logo">Hello</div> (a) .menu (b) .logo (c) #logo (d) #star
25. 25.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) div (b) #box (c) .star (d) #intro
26. 26.🎯 Which element does the selector li style? (a) <span class="menu"> (b) <p id="top"> (c) <li class="menu"> (d) <div>
27. 27.True or false: .note is an element selector. (a) False (b) True
28. 28.🎯 Which CSS selector matches this element?
    <span class="menu" id="end">Hello</span> (a) span (b) #menu (c) .note (d) .end
29. 29.True or false: p is an element selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) .main (b) h2 (c) #box (d) .star
31. 31.True or false: h1 is a class selector. (a) False (b) True
32. 32.True or false: #logo is an id selector. (a) False (b) True
33. 33.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) .main (b) h2 (c) .star (d) h1
35. 35.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
36. 36.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) div (b) #hero (c) .note (d) span
37. 37.🎯 Which element does the selector #hero style? (a) <h1 class="box"> (b) <p id="hero"> (c) <p class="hero"> (d) <p id="top">
38. 38.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) #note (b) .intro (c) span (d) #intro
39. 39.🎯 Which sign starts an id selector? (a) # (b) . (c) & (d) @
40. 40.True or false: .card is a class selector. (a) False (b) True

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