CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 470 · 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.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
2. 2.🎯 Which element does the selector h2 style? (a) <div class="star"> (b) <span id="hero"> (c) <li> (d) <h2 class="star">
3. 3.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <p class="star"> (c) <span class="red"> (d) <span class="box">
4. 4.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
5. 5.🎯 Can many elements share the same class? (a) No (b) Yes
6. 6.🎯 Which CSS selector matches this element?
   <li class="big" id="main">Hello</li> (a) #big (b) .red (c) .big (d) #logo
7. 7.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
8. 8.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
9. 9.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
10. 10.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
11. 11.True or false: .menu is a class selector. (a) True (b) False
12. 12.True or false: .big is a class selector. (a) True (b) False
13. 13.🎯 Which element does the selector .big style? (a) <div id="big"> (b) <div class="red"> (c) <div class="big"> (d) <span class="box">
14. 14.True or false: #end is an id selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) .end (b) h1 (c) #hero (d) #end
16. 16.🎯 Which element does the selector #top style? (a) <span class="top"> (b) <span id="top"> (c) <span id="intro"> (d) <p class="note">
17. 17.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2> (a) #menu (b) li (c) .intro (d) .menu
19. 19.🎯 Which CSS selector matches this element?
    <li class="star" id="top">Hello</li> (a) div (b) .top (c) #star (d) .star
20. 20.True or false: li is a class selector. (a) False (b) True
21. 21.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) #big (b) span (c) p (d) .red
22. 22.True or false: img is an element selector. (a) True (b) False
23. 23.True or false: #end is a class selector. (a) False (b) True
24. 24.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) p (b) .intro (c) #big (d) .big
26. 26.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) div (b) .menu (c) #star (d) #main
27. 27.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
28. 28.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
29. 29.True or false: #top is an element selector. (a) False (b) True
30. 30.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <p class="menu"> (c) <span id="intro"> (d) <span class="intro">
31. 31.🎯 Which element does the selector span style? (a) <p> (b) <span class="big"> (c) <h2 id="intro"> (d) <h1 class="big">
32. 32.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
33. 33.🎯 Which element does the selector .red style? (a) <h2 id="red"> (b) <h2 class="box"> (c) <h2 class="red"> (d) <li class="star">
34. 34.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #end (b) .logo (c) h1 (d) .box
35. 35.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
36. 36.🎯 Which element does the selector h1 style? (a) <h1 class="menu"> (b) <h2> (c) <div id="hero"> (d) <li class="menu">
37. 37.🎯 Which element does the selector #logo style? (a) <div class="logo"> (b) <div id="end"> (c) <div id="logo"> (d) <span class="note">
38. 38.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p id="top"> (c) <p class="top"> (d) <h1 class="menu">
39. 39.True or false: .card is a class selector. (a) False (b) True
40. 40.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h1 class="red"> (c) <h2 id="top"> (d) <p>

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