CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 626 · 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="note" id="hero">Hello</div> (a) #hero (b) #note (c) .big (d) .hero
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="red" id="end">Hello</h2> (a) li (b) .red (c) .box (d) .end
3. 3.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
4. 4.🎯 Which CSS selector matches this element?
   <h2 class="star" id="logo">Hello</h2> (a) #end (b) .logo (c) #star (d) #logo
5. 5.🎯 Which element does the selector #top style? (a) <span class="red"> (b) <div id="top"> (c) <div class="top"> (d) <div id="intro">
6. 6.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
7. 7.True or false: p is an element selector. (a) False (b) True
8. 8.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
9. 9.True or false: p is an id selector. (a) True (b) False
10. 10.True or false: .menu is an id selector. (a) True (b) False
11. 11.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="logo"> (c) <div class="red"> (d) <li id="end">
12. 12.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
13. 13.True or false: #main is an element selector. (a) True (b) False
14. 14.🎯 Which element does the selector .box style? (a) <span id="box"> (b) <p class="menu"> (c) <span class="box"> (d) <span class="star">
15. 15.True or false: li is a class selector. (a) False (b) True
16. 16.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
17. 17.🎯 Which element does the selector h2 style? (a) <div class="star"> (b) <li> (c) <span id="top"> (d) <h2 class="star">
18. 18.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="big"> (c) <h1 class="big"> (d) <div id="end">
19. 19.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
20. 20.True or false: #logo is an id selector. (a) True (b) False
21. 21.🎯 Can many elements share the same class? (a) No (b) Yes
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) #red (b) h2 (c) #top (d) .hero
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) h2 (b) .hero (c) #hero (d) .box
24. 24.True or false: h1 is an element selector. (a) True (b) False
25. 25.🎯 Which element does the selector #top style? (a) <p id="top"> (b) <h1 class="menu"> (c) <p class="top"> (d) <p id="intro">
26. 26.True or false: .card is an element selector. (a) False (b) True
27. 27.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h1 id="logo"> (c) <h2 class="star"> (d) <h1 class="main">
28. 28.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
29. 29.🎯 Which CSS selector matches this element?
    <span class="note" id="logo">Hello</span> (a) .big (b) span (c) #note (d) p
30. 30.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) .top (b) #intro (c) .note (d) .menu
31. 31.🎯 Which element does the selector .note style? (a) <span class="red"> (b) <div class="big"> (c) <div id="note"> (d) <div class="note">
32. 32.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
33. 33.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) h1 (b) h2 (c) .note (d) #top
35. 35.True or false: .note is a class selector. (a) False (b) True
36. 36.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
37. 37.🎯 Which element does the selector .box style? (a) <p id="box"> (b) <h1 class="menu"> (c) <p class="star"> (d) <p class="box">
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) #big (b) li (c) .red (d) #logo
39. 39.True or false: .menu is a class selector. (a) False (b) True
40. 40.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2

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