CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 460 · 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 h1 style? (a) <li class="star"> (b) <div id="main"> (c) <h1 class="star"> (d) <h2>
2. 2.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
3. 3.🎯 Which element does the selector p style? (a) <p class="red"> (b) <h1> (c) <li id="intro"> (d) <h2 class="red">
4. 4.True or false: .star is a class selector. (a) True (b) False
5. 5.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="end"> (c) <div class="star"> (d) <li id="logo">
6. 6.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
7. 7.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
8. 8.True or false: img is a class selector. (a) True (b) False
9. 9.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <p> (c) <span class="box"> (d) <h2 id="top">
10. 10.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
11. 11.True or false: img is an id selector. (a) True (b) False
12. 12.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
13. 13.True or false: li is an element selector. (a) True (b) False
14. 14.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
15. 15.🎯 Which element does the selector #end style? (a) <h1 class="end"> (b) <h2 class="red"> (c) <h1 id="hero"> (d) <h1 id="end">
16. 16.True or false: h1 is an element selector. (a) False (b) True
17. 17.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li id="note"> (c) <li class="big"> (d) <li class="note">
18. 18.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) .hero (b) h1 (c) p (d) .big
20. 20.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
21. 21.🎯 Which element does the selector #main style? (a) <h2 class="big"> (b) <h1 id="main"> (c) <h1 class="main"> (d) <h1 id="logo">
22. 22.🎯 Which element does the selector #main style? (a) <div id="logo"> (b) <div class="main"> (c) <div id="main"> (d) <span class="menu">
23. 23.True or false: .note is a class selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) div (b) #menu (c) #logo (d) span
25. 25.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
26. 26.True or false: #hero is an id selector. (a) False (b) True
27. 27.True or false: #hero is a class selector. (a) False (b) True
28. 28.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) #note (b) .big (c) #main (d) div
29. 29.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h2 class="red"> (c) <h1 class="note"> (d) <h1 class="big">
30. 30.🎯 Can many elements share the same class? (a) No (b) Yes
31. 31.True or false: p is an element selector. (a) True (b) False
32. 32.🎯 Which element does the selector #top style? (a) <span class="big"> (b) <div id="top"> (c) <div class="top"> (d) <div id="intro">
33. 33.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
34. 34.🎯 Which element does the selector #hero style? (a) <span class="hero"> (b) <p class="box"> (c) <span id="top"> (d) <span id="hero">
35. 35.🎯 Which element does the selector h2 style? (a) <div class="big"> (b) <h2 class="big"> (c) <span id="top"> (d) <li>
36. 36.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) #main (b) #box (c) .star (d) .main
38. 38.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span> (a) #top (b) .hero (c) .menu (d) #hero
39. 39.True or false: .big is an element selector. (a) True (b) False
40. 40.True or false: #end is an element selector. (a) True (b) False

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