CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 76 · 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.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
3. 3.True or false: .star is an element selector. (a) True (b) False
4. 4.🎯 Which CSS selector matches this element?
   <h2 class="big" id="main">Hello</h2> (a) #main (b) li (c) #logo (d) .main
5. 5.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <span id="top"> (c) <p class="red"> (d) <span class="top">
6. 6.🎯 Which element does the selector #main style? (a) <div id="main"> (b) <span class="note"> (c) <div class="main"> (d) <div id="logo">
7. 7.🎯 Which element does the selector li style? (a) <span class="menu"> (b) <div> (c) <p id="intro"> (d) <li class="menu">
8. 8.🎯 Which element does the selector div style? (a) <div class="note"> (b) <p class="note"> (c) <h1 id="intro"> (d) <span>
9. 9.🎯 Which CSS selector matches this element?
   <span class="box" id="top">Hello</span> (a) p (b) .top (c) .star (d) #top
10. 10.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) .intro (b) .big (c) #note (d) .note
11. 11.🎯 Which CSS selector matches this element?
    <li class="red" id="main">Hello</li> (a) div (b) .main (c) .box (d) li
12. 12.🎯 Which element does the selector .menu style? (a) <div id="menu"> (b) <div class="note"> (c) <span class="big"> (d) <div class="menu">
13. 13.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h1 id="intro"> (c) <h1 id="top"> (d) <h2 class="big">
14. 14.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <div> (c) <li class="note"> (d) <span class="note">
15. 15.🎯 Which element does the selector li style? (a) <span class="big"> (b) <li class="big"> (c) <div> (d) <p id="intro">
16. 16.True or false: .star is an id selector. (a) True (b) False
17. 17.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) .menu (b) .star (c) h1 (d) #top
18. 18.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
19. 19.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) div (b) #big (c) #end (d) .logo
20. 20.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) span (b) #top (c) .note (d) div
21. 21.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
22. 22.🎯 Can many elements share the same class? (a) Yes (b) No
23. 23.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <span id="intro"> (c) <span class="intro"> (d) <p class="menu">
24. 24.🎯 Which element does the selector #intro style? (a) <div class="intro"> (b) <div id="main"> (c) <div id="intro"> (d) <span class="menu">
25. 25.True or false: #top is an element selector. (a) True (b) False
26. 26.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) h2 (b) #end (c) #box (d) .star
28. 28.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
29. 29.🎯 Which element does the selector .big style? (a) <p class="big"> (b) <p class="red"> (c) <h1 class="box"> (d) <p id="big">
30. 30.🎯 Which sign starts an id selector? (a) & (b) # (c) @ (d) .
31. 31.True or false: .note is a class selector. (a) False (b) True
32. 32.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <div class="big"> (c) <h2 class="big"> (d) <li>
33. 33.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
34. 34.True or false: li is a class selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) div (b) li (c) #menu (d) .note
36. 36.True or false: #end is an id selector. (a) False (b) True
37. 37.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
38. 38.🎯 Which element does the selector #logo style? (a) <h1 class="star"> (b) <p id="logo"> (c) <p class="logo"> (d) <p id="end">
39. 39.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
40. 40.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) #red (b) li (c) div (d) .box

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