CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 288 · 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 #logo? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 Which CSS selector matches this element?
   <li class="big" id="top">Hello</li> (a) .red (b) #big (c) #intro (d) .big
3. 3.🎯 Which element does the selector .red style? (a) <li class="red"> (b) <div class="star"> (c) <li id="red"> (d) <li class="box">
4. 4.🎯 Which element does the selector .star style? (a) <p class="note"> (b) <span class="menu"> (c) <span class="star"> (d) <span id="star">
5. 5.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="note" id="main">Hello</h2> (a) #logo (b) li (c) #main (d) #note
7. 7.🎯 Which CSS selector matches this element?
   <span class="note" id="intro">Hello</span> (a) #main (b) .note (c) #note (d) .intro
8. 8.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
9. 9.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) 5 (d) any number
10. 10.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <span id="main"> (c) <li> (d) <h2 class="note">
11. 11.True or false: #hero is an id selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) #box (b) #end (c) h1 (d) .star
13. 13.🎯 Which CSS selector matches this element?
    <div class="menu" id="logo">Hello</div> (a) #logo (b) .note (c) .logo (d) span
14. 14.🎯 Which CSS selector matches this element?
    <span class="note" id="logo">Hello</span> (a) .big (b) #end (c) p (d) .note
15. 15.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
16. 16.True or false: .note is an id selector. (a) True (b) False
17. 17.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span> (a) #note (b) #top (c) p (d) .top
18. 18.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) h1 (b) .note (c) #hero (d) p
19. 19.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
20. 20.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h1 class="red"> (c) <p> (d) <h2 id="end">
21. 21.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) .star (b) #box (c) #main (d) #intro
23. 23.🎯 Which element does the selector #intro style? (a) <h1 id="main"> (b) <h1 class="intro"> (c) <h1 id="intro"> (d) <h2 class="note">
24. 24.True or false: #hero is a class selector. (a) True (b) False
25. 25.True or false: .note is an element selector. (a) True (b) False
26. 26.🎯 Can many elements share the same class? (a) No (b) Yes
27. 27.🎯 Which CSS selector matches this element?
    <li class="red" id="main">Hello</li> (a) #main (b) #logo (c) div (d) .main
28. 28.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
29. 29.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
30. 30.🎯 Which element does the selector p style? (a) <h2 class="red"> (b) <li id="end"> (c) <p class="red"> (d) <h1>
31. 31.True or false: .menu is an id selector. (a) False (b) True
32. 32.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
33. 33.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h1 id="logo"> (c) <h2 class="box"> (d) <h1 id="main">
34. 34.True or false: h1 is a class selector. (a) False (b) True
35. 35.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="note"> (c) <div id="main"> (d) <li class="note">
36. 36.True or false: #hero is an element selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) span (b) #main (c) .main (d) .note
38. 38.🎯 Which element does the selector h1 style? (a) <h1 class="red"> (b) <h2> (c) <li class="red"> (d) <div id="main">
39. 39.True or false: li is an id selector. (a) False (b) True
40. 40.True or false: #main is an element selector. (a) True (b) False

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