CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 857 · 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.True or false: .star is an id selector. (a) False (b) True
2. 2.🎯 Can many elements share the same class? (a) Yes (b) No
3. 3.🎯 Which CSS selector matches this element?
   <div class="star" id="top">Hello</div> (a) .top (b) .menu (c) div (d) #intro
4. 4.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
5. 5.🎯 Which element does the selector p style? (a) <p class="box"> (b) <li id="intro"> (c) <h2 class="box"> (d) <h1>
6. 6.🎯 Which element does the selector h2 style? (a) <span id="hero"> (b) <li> (c) <div class="big"> (d) <h2 class="big">
7. 7.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
8. 8.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h1 class="note"> (c) <h2 class="red"> (d) <h1 class="big">
9. 9.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="box"> (c) <h1 class="box"> (d) <div id="end">
10. 10.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
11. 11.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) #intro (b) div (c) .menu (d) #star
12. 12.True or false: .note is a class selector. (a) True (b) False
13. 13.True or false: #end is an element selector. (a) False (b) True
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) #top (b) .star (c) li (d) .top
15. 15.True or false: #top is an id selector. (a) True (b) False
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) #intro (b) .top (c) .star (d) li
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) h2 (b) #note (c) .big (d) h1
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) li (b) .red (c) #big (d) #logo
19. 19.True or false: li is an element selector. (a) True (b) False
20. 20.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) #star (b) .menu (c) h1 (d) p
21. 21.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
22. 22.True or false: .card is a class selector. (a) False (b) True
23. 23.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) .star (b) #intro (c) #top (d) .top
24. 24.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
25. 25.True or false: .big is a class selector. (a) False (b) True
26. 26.True or false: p is an element selector. (a) False (b) True
27. 27.True or false: p is a class selector. (a) True (b) False
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) #end (b) h1 (c) h2 (d) #menu
29. 29.True or false: .star is a class selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) #main (b) #intro (c) div (d) .box
31. 31.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
32. 32.True or false: img is an element selector. (a) False (b) True
33. 33.True or false: img is a class selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) #red (b) .box (c) .end (d) #end
35. 35.True or false: #hero is an id selector. (a) False (b) True
36. 36.True or false: #main is an id selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) .big (b) #main (c) .note (d) .intro
38. 38.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) span (b) #red (c) .box (d) .red
39. 39.🎯 Which element does the selector span style? (a) <p> (b) <span class="big"> (c) <h2 id="logo"> (d) <h1 class="big">
40. 40.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <h1 class="big"> (c) <p class="top"> (d) <p id="top">

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