CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 696 · 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?
   <span class="big" id="top">Hello</span> (a) .red (b) span (c) .top (d) p
2. 2.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <span id="intro"> (c) <li> (d) <h2 class="note">
3. 3.🎯 Which element does the selector #main style? (a) <p id="logo"> (b) <p class="main"> (c) <p id="main"> (d) <h1 class="star">
4. 4.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
5. 5.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
6. 6.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
7. 7.True or false: #main is an element selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <p class="note" id="logo">Hello</p> (a) .logo (b) #note (c) #end (d) #logo
9. 9.True or false: .card is a class selector. (a) True (b) False
10. 10.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) .main (b) #logo (c) .menu (d) .star
11. 11.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
12. 12.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
13. 13.True or false: p is an element selector. (a) False (b) True
14. 14.🎯 Which element does the selector #intro style? (a) <li id="intro"> (b) <li class="intro"> (c) <div class="star"> (d) <li id="main">
15. 15.True or false: body is an element selector. (a) False (b) True
16. 16.🎯 Can many elements share the same class? (a) No (b) Yes
17. 17.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
18. 18.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
19. 19.🎯 Which sign starts an id selector? (a) # (b) @ (c) . (d) &
20. 20.True or false: body is an id selector. (a) False (b) True
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) #big (b) #main (c) #logo (d) .red
22. 22.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
23. 23.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) .box (b) #red (c) #intro (d) p
24. 24.🎯 Which element does the selector #intro style? (a) <div id="main"> (b) <div class="intro"> (c) <span class="big"> (d) <div id="intro">
25. 25.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) #menu (b) .note (c) .hero (d) .menu
26. 26.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) #intro (b) #box (c) .star (d) .intro
27. 27.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
28. 28.True or false: img is an id selector. (a) True (b) False
29. 29.🎯 Which element does the selector p style? (a) <p class="star"> (b) <h2 class="star"> (c) <li id="main"> (d) <h1>
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) .end (b) #red (c) h2 (d) #end
31. 31.True or false: #logo is an element selector. (a) False (b) True
32. 32.🎯 Which element does the selector .big style? (a) <div class="big"> (b) <div class="red"> (c) <span class="box"> (d) <div id="big">
33. 33.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) #logo (b) .box (c) .logo (d) p
34. 34.🎯 Which element does the selector .box style? (a) <span class="menu"> (b) <div class="star"> (c) <div class="box"> (d) <div id="box">
35. 35.🎯 Which element does the selector #logo style? (a) <h1 id="logo"> (b) <h1 class="logo"> (c) <h1 id="end"> (d) <h2 class="menu">
36. 36.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="hero"> (c) <h1 class="note"> (d) <li class="note">
37. 37.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) #main (b) #logo (c) .main (d) h1
38. 38.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) div (b) #top (c) li (d) .box
39. 39.🎯 Which element does the selector li style? (a) <div> (b) <span class="big"> (c) <p id="top"> (d) <li class="big">
40. 40.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) .note (b) .menu (c) #hero (d) span

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