CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 280 · 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: .note is an id selector. (a) True (b) False
2. 2.🎯 Can many elements share the same class? (a) No (b) Yes
3. 3.True or false: .note is a class selector. (a) False (b) True
4. 4.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
5. 5.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
6. 6.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
7. 7.🎯 Which element does the selector .star style? (a) <div class="note"> (b) <li class="star"> (c) <li class="menu"> (d) <li id="star">
8. 8.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
9. 9.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="intro"> (c) <div class="star"> (d) <h2 class="star">
10. 10.True or false: body is an id selector. (a) False (b) True
11. 11.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
12. 12.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <h1 class="menu"> (c) <li class="menu"> (d) <h2>
13. 13.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
14. 14.🎯 Which element does the selector #intro style? (a) <h1 class="menu"> (b) <p id="intro"> (c) <p id="main"> (d) <p class="intro">
15. 15.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) #red (b) .box (c) .red (d) #main
16. 16.🎯 Which element does the selector .note style? (a) <h2 id="note"> (b) <h2 class="big"> (c) <li class="red"> (d) <h2 class="note">
17. 17.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
18. 18.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
19. 19.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) p (b) .menu (c) #logo (d) #star
20. 20.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) #intro (b) div (c) .big (d) .note
21. 21.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
22. 22.🎯 Which element does the selector .star style? (a) <span id="star"> (b) <span class="menu"> (c) <p class="note"> (d) <span class="star">
23. 23.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
24. 24.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <h1 class="red"> (c) <h2> (d) <li class="red">
25. 25.True or false: .card is an id selector. (a) False (b) True
26. 26.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) #top (b) #hero (c) .note (d) .hero
27. 27.True or false: #end is an id selector. (a) False (b) True
28. 28.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
29. 29.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) #note (b) #logo (c) .big (d) h1
30. 30.🎯 Which element does the selector div style? (a) <h1 id="main"> (b) <span> (c) <div class="star"> (d) <p class="star">
31. 31.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) .end (b) p (c) #red (d) h1
32. 32.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) .box (b) h1 (c) .intro (d) #box
33. 33.True or false: #hero is an id selector. (a) False (b) True
34. 34.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="main">Hello</h2> (a) #main (b) .main (c) #logo (d) .note
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1> (a) .end (b) #hero (c) .box (d) .star
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) #red (b) .red (c) .hero (d) #top
38. 38.🎯 Which element does the selector .red style? (a) <p class="star"> (b) <span id="red"> (c) <span class="red"> (d) <span class="box">
39. 39.🎯 Which element does the selector #top style? (a) <span class="top"> (b) <span id="intro"> (c) <span id="top"> (d) <p class="star">
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) #note (b) .note (c) .big (d) .intro

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