CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 306 · 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.True or false: #top is a class selector. (a) True (b) False
2. 2.True or false: #main is a class selector. (a) True (b) False
3. 3.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
4. 4.🎯 Can many elements share the same class? (a) Yes (b) No
5. 5.True or false: .menu is an id selector. (a) False (b) True
6. 6.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 Which element does the selector p style? (a) <h2 class="box"> (b) <h1> (c) <li id="top"> (d) <p class="box">
8. 8.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="big" id="top">Hello</h1> (a) .big (b) h2 (c) .top (d) #big
10. 10.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
11. 11.🎯 Which element does the selector #intro style? (a) <div id="main"> (b) <span class="box"> (c) <div class="intro"> (d) <div id="intro">
12. 12.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
13. 13.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) div (b) #logo (c) #big (d) .red
14. 14.🎯 Which element does the selector div style? (a) <div class="note"> (b) <span> (c) <p class="note"> (d) <h1 id="intro">
15. 15.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) .menu (b) .note (c) #menu (d) div
16. 16.🎯 Which element does the selector .red style? (a) <span class="star"> (b) <div id="red"> (c) <div class="box"> (d) <div class="red">
17. 17.🎯 Which element does the selector #top style? (a) <div id="top"> (b) <div class="top"> (c) <span class="note"> (d) <div id="intro">
18. 18.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) #top (b) .note (c) p (d) .hero
19. 19.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
20. 20.🎯 Which element does the selector span style? (a) <h2 id="main"> (b) <h1 class="box"> (c) <span class="box"> (d) <p>
21. 21.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) div (b) li (c) .star (d) #main
22. 22.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <li> (c) <h2 class="box"> (d) <div class="box">
23. 23.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <p class="box"> (c) <span id="intro"> (d) <span class="top">
24. 24.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) #big (b) li (c) #logo (d) .main
25. 25.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
26. 26.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
27. 27.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 Which element does the selector .menu style? (a) <p class="big"> (b) <span class="menu"> (c) <span class="note"> (d) <span id="menu">
29. 29.🎯 Which element does the selector #intro style? (a) <li id="intro"> (b) <li class="intro"> (c) <div class="big"> (d) <li id="main">
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) #top (b) .red (c) h2 (d) #intro
31. 31.🎯 Which element does the selector .red style? (a) <h2 id="red"> (b) <h2 class="box"> (c) <h2 class="red"> (d) <li class="star">
32. 32.True or false: #main is an element selector. (a) True (b) False
33. 33.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h1 class="main"> (c) <h1 id="logo"> (d) <h2 class="menu">
34. 34.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) .logo (b) .note (c) li (d) div
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) .box (b) li (c) .star (d) .main
36. 36.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) #intro (b) #star (c) p (d) .menu
37. 37.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="menu"> (c) <h1 class="menu"> (d) <div id="intro">
38. 38.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p id="big"> (c) <p class="red"> (d) <p class="big">
39. 39.True or false: body is an element selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) h1 (b) .logo (c) .big (d) #end

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