CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 224 · 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 element does the selector #end style? (a) <span id="end"> (b) <p class="note"> (c) <span id="hero"> (d) <span class="end">
2. 2.🎯 Which CSS selector matches this element?
   <span class="menu" id="end">Hello</span> (a) p (b) .end (c) #hero (d) span
3. 3.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
4. 4.🎯 Which CSS selector matches this element?
   <h1 class="box" id="intro">Hello</h1> (a) #box (b) h2 (c) .intro (d) h1
5. 5.True or false: .big is an element selector. (a) False (b) True
6. 6.True or false: body is an element selector. (a) False (b) True
7. 7.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
8. 8.🎯 Which CSS selector matches this element?
   <p class="big" id="main">Hello</p> (a) h1 (b) #main (c) .red (d) #big
9. 9.🎯 Which element does the selector #top style? (a) <p class="star"> (b) <span id="top"> (c) <span class="top"> (d) <span id="intro">
10. 10.True or false: .star is a class selector. (a) False (b) True
11. 11.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
12. 12.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) .star (b) p (c) .menu (d) #star
13. 13.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
14. 14.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) #main (b) .big (c) #note (d) h2
15. 15.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) #note (b) #hero (c) li (d) .hero
17. 17.🎯 Can many elements share the same class? (a) No (b) Yes
18. 18.🎯 Which element does the selector #top style? (a) <span class="big"> (b) <div id="top"> (c) <div id="intro"> (d) <div class="top">
19. 19.🎯 Which element does the selector p style? (a) <p class="big"> (b) <h2 class="big"> (c) <li id="hero"> (d) <h1>
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) li (b) h2 (c) .note (d) #intro
21. 21.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
22. 22.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
23. 23.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p class="note"> (c) <p class="big"> (d) <p id="note">
24. 24.True or false: h1 is an element selector. (a) True (b) False
25. 25.True or false: li is a class selector. (a) False (b) True
26. 26.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
27. 27.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
28. 28.🎯 Which element does the selector li style? (a) <li class="big"> (b) <span class="big"> (c) <div> (d) <p id="logo">
29. 29.True or false: img is an id selector. (a) False (b) True
30. 30.True or false: .note is an element selector. (a) False (b) True
31. 31.🎯 Which element does the selector .box style? (a) <h2 class="menu"> (b) <h1 id="box"> (c) <h1 class="box"> (d) <h1 class="star">
32. 32.🎯 Which element does the selector h1 style? (a) <div id="main"> (b) <h1 class="big"> (c) <li class="big"> (d) <h2>
33. 33.True or false: .card is an id selector. (a) False (b) True
34. 34.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
35. 35.True or false: #end is a class selector. (a) True (b) False
36. 36.🎯 Which element does the selector .note style? (a) <h2 id="note"> (b) <li class="red"> (c) <h2 class="note"> (d) <h2 class="big">
37. 37.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p id="top"> (c) <p class="top"> (d) <h1 class="menu">
38. 38.True or false: #top is an element selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) p (b) .top (c) .red (d) .box
40. 40.🎯 Which element does the selector #logo style? (a) <h1 class="star"> (b) <p class="logo"> (c) <p id="end"> (d) <p id="logo">

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