CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 320 · 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 CSS selector matches this element?
   <p class="star" id="intro">Hello</p> (a) .intro (b) p (c) h1 (d) #star
2. 2.True or false: .star is a class selector. (a) False (b) True
3. 3.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
4. 4.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
5. 5.🎯 Which element does the selector .red style? (a) <div class="red"> (b) <span class="star"> (c) <div class="box"> (d) <div id="red">
6. 6.True or false: .note is a class selector. (a) False (b) True
7. 7.🎯 Which element does the selector .box style? (a) <h1 class="star"> (b) <h1 class="box"> (c) <h2 class="menu"> (d) <h1 id="box">
8. 8.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
9. 9.True or false: .star is an id selector. (a) False (b) True
10. 10.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
11. 11.True or false: .big is an element selector. (a) True (b) False
12. 12.🎯 Which element does the selector .big style? (a) <div class="big"> (b) <span class="box"> (c) <div id="big"> (d) <div class="red">
13. 13.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
14. 14.🎯 Which element does the selector div style? (a) <p class="big"> (b) <div class="big"> (c) <h1 id="intro"> (d) <span>
15. 15.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
16. 16.True or false: #end is a class selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) span (b) #star (c) .main (d) p
18. 18.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) span (b) #menu (c) .end (d) .menu
19. 19.🎯 Which element does the selector .star style? (a) <p class="star"> (b) <p id="star"> (c) <h1 class="note"> (d) <p class="menu">
20. 20.🎯 Which element does the selector #intro style? (a) <h1 class="intro"> (b) <h1 id="intro"> (c) <h2 class="box"> (d) <h1 id="main">
21. 21.🎯 Which element does the selector #hero style? (a) <div id="top"> (b) <span class="star"> (c) <div class="hero"> (d) <div id="hero">
22. 22.🎯 Which element does the selector h2 style? (a) <div class="menu"> (b) <span id="top"> (c) <h2 class="menu"> (d) <li>
23. 23.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
24. 24.🎯 Which element does the selector #hero style? (a) <span class="hero"> (b) <span id="hero"> (c) <span id="top"> (d) <p class="big">
25. 25.🎯 Which CSS selector matches this element?
    <div class="box" id="end">Hello</div> (a) #box (b) div (c) #hero (d) .star
26. 26.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
27. 27.🎯 Can many elements share the same class? (a) No (b) Yes
28. 28.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
29. 29.True or false: .menu is an id selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <div class="star" id="end">Hello</div> (a) #star (b) #end (c) .end (d) .menu
31. 31.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
32. 32.True or false: .card is an element selector. (a) True (b) False
33. 33.True or false: #logo is a class selector. (a) True (b) False
34. 34.🎯 Which element does the selector div style? (a) <span> (b) <div class="menu"> (c) <h1 id="logo"> (d) <p class="menu">
35. 35.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) #main (b) div (c) .big (d) .intro
36. 36.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) .main (b) div (c) .note (d) #note
37. 37.🎯 Which element does the selector .note style? (a) <p class="red"> (b) <span class="big"> (c) <span class="note"> (d) <span id="note">
38. 38.True or false: img is a class selector. (a) True (b) False
39. 39.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
40. 40.True or false: .big is an id selector. (a) True (b) False

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