CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 134 · 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 an id selector? (a) @ (b) & (c) . (d) #
2. 2.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
3. 3.True or false: li is an id selector. (a) False (b) True
4. 4.🎯 Which element does the selector p style? (a) <h2 class="box"> (b) <li id="main"> (c) <p class="box"> (d) <h1>
5. 5.🎯 Which CSS selector matches this element?
   <div class="menu" id="logo">Hello</div> (a) div (b) #menu (c) span (d) .logo
6. 6.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="hero"> (c) <li class="star"> (d) <h1 class="star">
7. 7.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
8. 8.🎯 Which CSS selector matches this element?
   <span class="star" id="end">Hello</span> (a) #end (b) .menu (c) .end (d) #star
9. 9.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
10. 10.🎯 Which element does the selector #end style? (a) <span class="end"> (b) <p class="menu"> (c) <span id="hero"> (d) <span id="end">
11. 11.True or false: #top is an element selector. (a) False (b) True
12. 12.True or false: h1 is an element selector. (a) False (b) True
13. 13.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h2 id="intro"> (c) <p> (d) <h1 class="red">
14. 14.True or false: #logo is an element selector. (a) False (b) True
15. 15.True or false: .big is a class selector. (a) True (b) False
16. 16.🎯 Which element does the selector p style? (a) <h2 class="menu"> (b) <li id="top"> (c) <h1> (d) <p class="menu">
17. 17.🎯 Which element does the selector .box style? (a) <span class="menu"> (b) <div class="box"> (c) <div id="box"> (d) <div class="star">
18. 18.🎯 Which element does the selector div style? (a) <h1 id="top"> (b) <div class="star"> (c) <span> (d) <p class="star">
19. 19.🎯 Can many elements share the same class? (a) No (b) Yes
20. 20.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h1 id="big"> (c) <h1 class="red"> (d) <h2 class="box">
21. 21.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .intro (b) .note (c) div (d) li
22. 22.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) #menu (b) #top (c) #intro (d) .top
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) h2 (b) .big (c) .end (d) #hero
24. 24.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) li (b) #menu (c) div (d) .hero
25. 25.True or false: .star is a class selector. (a) True (b) False
26. 26.🎯 Which element does the selector #hero style? (a) <p id="hero"> (b) <p id="top"> (c) <p class="hero"> (d) <h1 class="note">
27. 27.True or false: #main is an id selector. (a) True (b) False
28. 28.True or false: #hero is a class selector. (a) True (b) False
29. 29.🎯 Which element does the selector .box style? (a) <h2 class="star"> (b) <h2 id="box"> (c) <h2 class="box"> (d) <li class="menu">
30. 30.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) .big (b) .main (c) p (d) #main
31. 31.🎯 Which element does the selector div style? (a) <h1 id="intro"> (b) <div class="red"> (c) <p class="red"> (d) <span>
32. 32.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
33. 33.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
34. 34.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
35. 35.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) #box (b) .main (c) #main (d) .star
37. 37.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
38. 38.True or false: body is a class selector. (a) False (b) True
39. 39.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
40. 40.🎯 Which element does the selector #logo style? (a) <h2 id="logo"> (b) <h2 class="logo"> (c) <h2 id="end"> (d) <li class="box">

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