CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 219 · 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="box" id="intro">Hello</div> (a) .star (b) span (c) #box (d) #intro
2. 2.🎯 Which element does the selector .box style? (a) <h2 class="menu"> (b) <h1 class="star"> (c) <h1 class="box"> (d) <h1 id="box">
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="star" id="logo">Hello</h1> (a) .logo (b) h2 (c) #star (d) h1
4. 4.🎯 Which element does the selector #main style? (a) <li id="main"> (b) <li class="main"> (c) <div class="box"> (d) <li id="logo">
5. 5.🎯 Which element does the selector .note style? (a) <h1 class="big"> (b) <h1 id="note"> (c) <h2 class="red"> (d) <h1 class="note">
6. 6.🎯 Which element does the selector .big style? (a) <h1 id="big"> (b) <h1 class="big"> (c) <h2 class="box"> (d) <h1 class="red">
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="note" id="hero">Hello</h1> (a) #note (b) .hero (c) #top (d) h1
8. 8.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
9. 9.True or false: p is a class selector. (a) False (b) True
10. 10.🎯 Can many elements share the same class? (a) No (b) Yes
11. 11.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
12. 12.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
13. 13.True or false: .menu is an element selector. (a) False (b) True
14. 14.🎯 Which element does the selector #top style? (a) <h2 id="intro"> (b) <li class="menu"> (c) <h2 class="top"> (d) <h2 id="top">
15. 15.🎯 Which element does the selector #end style? (a) <h2 class="big"> (b) <h1 class="end"> (c) <h1 id="end"> (d) <h1 id="hero">
16. 16.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
17. 17.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) .intro (b) .red (c) .big (d) #main
18. 18.True or false: #logo is an id selector. (a) True (b) False
19. 19.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
20. 20.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
21. 21.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) #logo (b) .menu (c) #star (d) .star
23. 23.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span> (a) #logo (b) .box (c) .star (d) .main
24. 24.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
25. 25.True or false: #top is a class selector. (a) False (b) True
26. 26.True or false: #hero is an id selector. (a) True (b) False
27. 27.True or false: .big is a class selector. (a) False (b) True
28. 28.🎯 Which element does the selector .box style? (a) <span class="menu"> (b) <div class="box"> (c) <div id="box"> (d) <div class="star">
29. 29.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) .intro (b) #intro (c) #note (d) div
30. 30.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) .box (b) p (c) .intro (d) #main
31. 31.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <li class="big"> (c) <h2> (d) <h1 class="big">
32. 32.True or false: h1 is an element selector. (a) True (b) False
33. 33.🎯 Which element does the selector h2 style? (a) <span id="logo"> (b) <li> (c) <div class="note"> (d) <h2 class="note">
34. 34.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #end (b) #hero (c) .box (d) h1
35. 35.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
36. 36.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <span class="top"> (c) <p class="big"> (d) <span id="intro">
37. 37.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
38. 38.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) p (b) .big (c) #big (d) .main
39. 39.🎯 Which element does the selector #top style? (a) <div class="top"> (b) <div id="intro"> (c) <span class="note"> (d) <div id="top">
40. 40.🎯 Which element does the selector .box style? (a) <span class="star"> (b) <span class="box"> (c) <p class="menu"> (d) <span id="box">

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