CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 98 · 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 #intro style? (a) <li class="menu"> (b) <h2 id="main"> (c) <h2 class="intro"> (d) <h2 id="intro">
2. 2.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
3. 3.🎯 Which element does the selector #main style? (a) <h2 id="logo"> (b) <li class="menu"> (c) <h2 class="main"> (d) <h2 id="main">
4. 4.🎯 Which element does the selector h2 style? (a) <div class="star"> (b) <span id="intro"> (c) <li> (d) <h2 class="star">
5. 5.🎯 Which CSS selector matches this element?
   <h2 class="star" id="logo">Hello</h2> (a) .star (b) #end (c) #star (d) .logo
6. 6.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
7. 7.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
8. 8.🎯 Which element does the selector .red style? (a) <h2 class="box"> (b) <h2 class="red"> (c) <h2 id="red"> (d) <li class="star">
9. 9.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
10. 10.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) #top (b) span (c) #hero (d) .menu
11. 11.True or false: #main is an id selector. (a) False (b) True
12. 12.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
13. 13.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
14. 14.True or false: img is a class selector. (a) False (b) True
15. 15.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
16. 16.🎯 Which element does the selector #logo style? (a) <span class="big"> (b) <div id="end"> (c) <div class="logo"> (d) <div id="logo">
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) .menu (b) .end (c) #end (d) #star
18. 18.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
19. 19.🎯 Which element does the selector #main style? (a) <p id="logo"> (b) <p class="main"> (c) <h1 class="big"> (d) <p id="main">
20. 20.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) .menu (b) #menu (c) div (d) .note
21. 21.🎯 Which element does the selector .box style? (a) <li id="box"> (b) <li class="star"> (c) <div class="menu"> (d) <li class="box">
22. 22.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
23. 23.🎯 Can many elements share the same class? (a) Yes (b) No
24. 24.🎯 Which element does the selector #logo style? (a) <p class="logo"> (b) <h1 class="big"> (c) <p id="logo"> (d) <p id="end">
25. 25.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) #hero (b) #note (c) .hero (d) .big
26. 26.True or false: p is an id selector. (a) False (b) True
27. 27.🎯 Which element does the selector p style? (a) <p class="box"> (b) <li id="logo"> (c) <h1> (d) <h2 class="box">
28. 28.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) .red (b) p (c) span (d) .main
29. 29.True or false: #logo is a class selector. (a) True (b) False
30. 30.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
31. 31.True or false: img is an id selector. (a) False (b) True
32. 32.🎯 Which element does the selector .box style? (a) <div class="box"> (b) <span class="menu"> (c) <div class="star"> (d) <div id="box">
33. 33.True or false: .star is a class selector. (a) False (b) True
34. 34.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <span id="intro"> (c) <p class="red"> (d) <span class="top">
35. 35.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) li (b) #intro (c) .top (d) div
36. 36.🎯 Which element does the selector p style? (a) <h1> (b) <li id="intro"> (c) <p class="big"> (d) <h2 class="big">
37. 37.🎯 Which element does the selector #intro style? (a) <div class="red"> (b) <li id="main"> (c) <li id="intro"> (d) <li class="intro">
38. 38.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
39. 39.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
40. 40.True or false: body is an element selector. (a) False (b) True

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