CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 569 · 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?
   <span class="red" id="top">Hello</span> (a) .top (b) .red (c) p (d) #red
2. 2.🎯 Which sign starts an id selector? (a) & (b) # (c) @ (d) .
3. 3.🎯 Which element does the selector div style? (a) <span> (b) <div class="menu"> (c) <p class="menu"> (d) <h1 id="logo">
4. 4.🎯 Which CSS selector matches this element?
   <li class="big" id="logo">Hello</li> (a) div (b) #big (c) .big (d) .logo
5. 5.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p class="big"> (c) <p id="note"> (d) <p class="note">
6. 6.🎯 Which element does the selector #intro style? (a) <li id="main"> (b) <li class="intro"> (c) <div class="menu"> (d) <li id="intro">
7. 7.🎯 Which CSS selector matches this element?
   <p class="menu" id="intro">Hello</p> (a) p (b) .intro (c) .note (d) h1
8. 8.🎯 Which element does the selector h1 style? (a) <li class="menu"> (b) <h2> (c) <h1 class="menu"> (d) <div id="top">
9. 9.True or false: .star is a class selector. (a) True (b) False
10. 10.🎯 Which element does the selector #main style? (a) <div class="red"> (b) <li class="main"> (c) <li id="main"> (d) <li id="logo">
11. 11.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
12. 12.🎯 Can many elements share the same class? (a) Yes (b) No
13. 13.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) .note (b) #top (c) #menu (d) .menu
14. 14.🎯 Which element does the selector #end style? (a) <div id="hero"> (b) <div id="end"> (c) <div class="end"> (d) <span class="note">
15. 15.🎯 Which element does the selector #top style? (a) <h2 id="top"> (b) <li class="big"> (c) <h2 class="top"> (d) <h2 id="intro">
16. 16.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) .menu (b) .hero (c) span (d) div
17. 17.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) .star (b) .box (c) .hero (d) p
18. 18.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h1 id="big"> (c) <h2 class="box"> (d) <h1 class="red">
19. 19.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
20. 20.True or false: #logo is an id selector. (a) True (b) False
21. 21.True or false: #main is an element selector. (a) True (b) False
22. 22.True or false: h1 is an element selector. (a) False (b) True
23. 23.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
24. 24.🎯 Which element does the selector .note style? (a) <li class="big"> (b) <div class="red"> (c) <li id="note"> (d) <li class="note">
25. 25.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) #logo (b) .logo (c) .red (d) div
26. 26.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
27. 27.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
28. 28.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
29. 29.True or false: .card is a class selector. (a) False (b) True
30. 30.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
31. 31.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
32. 32.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
33. 33.True or false: .note is a class selector. (a) False (b) True
34. 34.True or false: .menu is an element selector. (a) False (b) True
35. 35.🎯 Which element does the selector #main style? (a) <h1 id="logo"> (b) <h2 class="red"> (c) <h1 id="main"> (d) <h1 class="main">
36. 36.🎯 Which element does the selector .menu style? (a) <div class="note"> (b) <div class="menu"> (c) <span class="big"> (d) <div id="menu">
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="hero">Hello</h2> (a) li (b) .note (c) .hero (d) h2
38. 38.🎯 Which element does the selector .red style? (a) <p class="star"> (b) <span class="red"> (c) <span id="red"> (d) <span class="box">
39. 39.🎯 Which element does the selector #hero style? (a) <div id="hero"> (b) <span class="menu"> (c) <div class="hero"> (d) <div id="top">
40. 40.True or false: h1 is a class selector. (a) False (b) True

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