CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 493 · 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 #main style? (a) <li class="menu"> (b) <h2 class="main"> (c) <h2 id="logo"> (d) <h2 id="main">
2. 2.🎯 Which CSS selector matches this element?
   <p class="note" id="main">Hello</p> (a) .big (b) #note (c) #main (d) .main
3. 3.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
4. 4.True or false: li is an element selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <li class="red" id="logo">Hello</li> (a) .box (b) .red (c) div (d) .logo
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="star" id="end">Hello</h1> (a) .menu (b) .end (c) #end (d) #hero
7. 7.True or false: #main is an id selector. (a) True (b) False
8. 8.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
9. 9.🎯 Which element does the selector #top style? (a) <div class="menu"> (b) <li class="top"> (c) <li id="top"> (d) <li id="intro">
10. 10.🎯 Which element does the selector .note style? (a) <span class="red"> (b) <div class="note"> (c) <div id="note"> (d) <div class="big">
11. 11.🎯 Which element does the selector p style? (a) <h1> (b) <p class="star"> (c) <h2 class="star"> (d) <li id="top">
12. 12.True or false: img is an id selector. (a) False (b) True
13. 13.🎯 Which element does the selector #end style? (a) <h2 class="big"> (b) <h1 id="end"> (c) <h1 id="hero"> (d) <h1 class="end">
14. 14.🎯 Can many elements share the same class? (a) No (b) Yes
15. 15.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) #logo (b) #big (c) span (d) #main
16. 16.True or false: #end is an id selector. (a) False (b) True
17. 17.True or false: #main is a class selector. (a) True (b) False
18. 18.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
20. 20.True or false: h1 is an element selector. (a) False (b) True
21. 21.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
22. 22.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
23. 23.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) h1 (b) p (c) .end (d) .big
24. 24.🎯 Which element does the selector p style? (a) <p class="red"> (b) <h1> (c) <h2 class="red"> (d) <li id="end">
25. 25.🎯 Which element does the selector #logo style? (a) <p id="end"> (b) <p id="logo"> (c) <h1 class="big"> (d) <p class="logo">
26. 26.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) #hero (b) .red (c) .hero (d) #top
27. 27.True or false: #hero is an id selector. (a) True (b) False
28. 28.True or false: .card is an id selector. (a) True (b) False
29. 29.True or false: .card is a class selector. (a) False (b) True
30. 30.🎯 Which element does the selector .red style? (a) <li class="star"> (b) <h2 id="red"> (c) <h2 class="box"> (d) <h2 class="red">
31. 31.True or false: p is an element selector. (a) False (b) True
32. 32.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h1 class="hero"> (c) <h2 class="note"> (d) <h1 id="top">
33. 33.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .intro (b) div (c) .menu (d) #menu
34. 34.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) #big (b) .red (c) #logo (d) h1
35. 35.True or false: .note is an element selector. (a) False (b) True
36. 36.True or false: .star is a class selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) p (b) .big (c) span (d) #note
38. 38.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) #intro (b) .box (c) li (d) .top
39. 39.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) 1 (d) any number
40. 40.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) .logo (b) #note (c) span (d) #logo

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