CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 279 · 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?
   <div class="red" id="top">Hello</div> (a) .top (b) div (c) #red (d) #intro
2. 2.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
3. 3.True or false: .big is an id selector. (a) True (b) False
4. 4.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
5. 5.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
6. 6.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
7. 7.🎯 Which CSS selector matches this element?
   <p class="big" id="end">Hello</p> (a) #big (b) h1 (c) #hero (d) .big
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="red" id="intro">Hello</h2> (a) li (b) h2 (c) .intro (d) #main
9. 9.🎯 Which element does the selector div style? (a) <h1 id="top"> (b) <span> (c) <div class="red"> (d) <p class="red">
10. 10.True or false: .note is an id selector. (a) True (b) False
11. 11.🎯 Which element does the selector .box style? (a) <h1 class="star"> (b) <h2 class="menu"> (c) <h1 class="box"> (d) <h1 id="box">
12. 12.🎯 Which element does the selector .menu style? (a) <h1 class="big"> (b) <p id="menu"> (c) <p class="note"> (d) <p class="menu">
13. 13.🎯 Which element does the selector .red style? (a) <div class="box"> (b) <div class="red"> (c) <span class="star"> (d) <div id="red">
14. 14.True or false: li is a class selector. (a) False (b) True
15. 15.🎯 Which element does the selector .star style? (a) <span class="star"> (b) <span class="menu"> (c) <p class="note"> (d) <span id="star">
16. 16.True or false: .big is a class selector. (a) True (b) False
17. 17.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="red"> (c) <li class="red"> (d) <div id="main">
18. 18.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
19. 19.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) .main (b) .red (c) #red (d) span
20. 20.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
21. 21.True or false: #hero is an id selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) #main (b) .intro (c) .box (d) .red
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) #logo (b) h1 (c) h2 (d) .red
24. 24.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
25. 25.🎯 Can many elements share the same class? (a) No (b) Yes
26. 26.True or false: img is a class selector. (a) False (b) True
27. 27.True or false: #end is an id selector. (a) False (b) True
28. 28.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
29. 29.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) #note (b) .big (c) .end (d) #end
30. 30.🎯 Which element does the selector .note style? (a) <li class="note"> (b) <li class="big"> (c) <li id="note"> (d) <div class="red">
31. 31.🎯 Which element does the selector p style? (a) <h2 class="note"> (b) <p class="note"> (c) <h1> (d) <li id="logo">
32. 32.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) li (b) #end (c) .logo (d) div
33. 33.True or false: .menu is an id selector. (a) False (b) True
34. 34.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <li class="box"> (c) <h1 class="box"> (d) <h2>
35. 35.🎯 Which element does the selector #logo style? (a) <h1 class="big"> (b) <p id="end"> (c) <p id="logo"> (d) <p class="logo">
36. 36.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) p (b) .big (c) h1 (d) #note
37. 37.🎯 Which element does the selector .big style? (a) <span id="big"> (b) <span class="red"> (c) <p class="box"> (d) <span class="big">
38. 38.🎯 Which element does the selector .note style? (a) <span class="note"> (b) <p class="red"> (c) <span class="big"> (d) <span id="note">
39. 39.🎯 Which element does the selector div style? (a) <span> (b) <p class="star"> (c) <div class="star"> (d) <h1 id="top">
40. 40.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <li class="menu"> (c) <h1 class="menu"> (d) <h2>

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