CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 831 · 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 #top style? (a) <span id="intro"> (b) <p class="box"> (c) <span id="top"> (d) <span class="top">
3. 3.True or false: img is an element selector. (a) True (b) False
4. 4.True or false: .star is a class selector. (a) True (b) False
5. 5.True or false: .star is an id selector. (a) True (b) False
6. 6.🎯 Which element does the selector #intro style? (a) <li class="intro"> (b) <li id="main"> (c) <div class="box"> (d) <li id="intro">
7. 7.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
8. 8.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
9. 9.True or false: .card is an id selector. (a) False (b) True
10. 10.True or false: .note is an id selector. (a) False (b) True
11. 11.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
12. 12.🎯 Which element does the selector p style? (a) <p class="big"> (b) <h2 class="big"> (c) <li id="hero"> (d) <h1>
13. 13.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h2 id="end"> (c) <p> (d) <h1 class="red">
14. 14.🎯 Which element does the selector #logo style? (a) <li class="menu"> (b) <h2 class="logo"> (c) <h2 id="end"> (d) <h2 id="logo">
15. 15.True or false: .note is a class selector. (a) True (b) False
16. 16.True or false: .card is a class selector. (a) False (b) True
17. 17.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
18. 18.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) li (b) #star (c) .menu (d) #main
19. 19.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
20. 20.🎯 Which element does the selector h1 style? (a) <h1 class="box"> (b) <h2> (c) <li class="box"> (d) <div id="top">
21. 21.🎯 Can many elements share the same class? (a) Yes (b) No
22. 22.🎯 Which element does the selector #logo style? (a) <div id="end"> (b) <span class="red"> (c) <div id="logo"> (d) <div class="logo">
23. 23.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="red"> (c) <div id="top"> (d) <h1 class="red">
24. 24.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
25. 25.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) div (b) .star (c) .top (d) li
26. 26.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
27. 27.True or false: .big is an element selector. (a) False (b) True
28. 28.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) .intro (b) .note (c) .big (d) #main
29. 29.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
30. 30.🎯 Which element does the selector #end style? (a) <li id="end"> (b) <li class="end"> (c) <li id="hero"> (d) <div class="big">
31. 31.🎯 Which element does the selector span style? (a) <span class="menu"> (b) <p> (c) <h1 class="menu"> (d) <h2 id="top">
32. 32.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
33. 33.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
34. 34.True or false: #logo is an id selector. (a) True (b) False
35. 35.🎯 Which element does the selector .menu style? (a) <h2 class="big"> (b) <h1 class="note"> (c) <h1 class="menu"> (d) <h1 id="menu">
36. 36.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) .intro (b) .star (c) #main (d) li
37. 37.🎯 Which element does the selector h1 style? (a) <h1 class="note"> (b) <h2> (c) <div id="top"> (d) <li class="note">
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) .box (b) h2 (c) .red (d) .logo
39. 39.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p id="note"> (c) <p class="note"> (d) <p class="big">
40. 40.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) #end (b) #hero (c) .end (d) .star

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