CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 281 · 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.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) h2 (b) #main (c) h1 (d) .intro
3. 3.🎯 Which CSS selector matches this element?
   <div class="menu" id="logo">Hello</div> (a) span (b) #end (c) .menu (d) .note
4. 4.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
5. 5.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
6. 6.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
7. 7.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
8. 8.🎯 Which CSS selector matches this element?
   <li class="red" id="end">Hello</li> (a) div (b) #red (c) .end (d) li
9. 9.True or false: .star is a class selector. (a) False (b) True
10. 10.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
11. 11.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) span (b) .logo (c) .box (d) #red
12. 12.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <p> (c) <h1 class="note"> (d) <span class="note">
13. 13.True or false: .note is an id selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="red" id="main">Hello</h2> (a) #red (b) #logo (c) #main (d) li
15. 15.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
16. 16.🎯 Can many elements share the same class? (a) No (b) Yes
17. 17.🎯 Which element does the selector .star style? (a) <h1 id="star"> (b) <h2 class="note"> (c) <h1 class="menu"> (d) <h1 class="star">
18. 18.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) p (b) .star (c) #box (d) #logo
19. 19.True or false: #end is an element selector. (a) False (b) True
20. 20.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
21. 21.🎯 Which element does the selector #logo style? (a) <h2 id="end"> (b) <li class="star"> (c) <h2 class="logo"> (d) <h2 id="logo">
22. 22.🎯 Which element does the selector .note style? (a) <div id="note"> (b) <div class="big"> (c) <span class="red"> (d) <div class="note">
23. 23.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
24. 24.🎯 Which element does the selector li style? (a) <span class="box"> (b) <div> (c) <p id="intro"> (d) <li class="box">
25. 25.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <li> (c) <div class="menu"> (d) <h2 class="menu">
26. 26.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="end"> (c) <div class="note"> (d) <h2 class="note">
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="big" id="main">Hello</h2> (a) #big (b) .main (c) #logo (d) .big
28. 28.True or false: #logo is a class selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) .star (b) .hero (c) #top (d) div
30. 30.🎯 Which element does the selector #top style? (a) <div class="top"> (b) <div id="intro"> (c) <div id="top"> (d) <span class="box">
31. 31.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) .box (b) #red (c) #top (d) span
32. 32.🎯 Which element does the selector .red style? (a) <h1 id="red"> (b) <h2 class="star"> (c) <h1 class="red"> (d) <h1 class="box">
33. 33.🎯 Which element does the selector .menu style? (a) <h2 class="note"> (b) <li class="big"> (c) <h2 class="menu"> (d) <h2 id="menu">
34. 34.True or false: .menu is a class selector. (a) True (b) False
35. 35.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 class="note"> (c) <h1 class="big"> (d) <h1 id="note">
36. 36.True or false: .note is a class selector. (a) True (b) False
37. 37.🎯 Which element does the selector #main style? (a) <p id="logo"> (b) <h1 class="star"> (c) <p id="main"> (d) <p class="main">
38. 38.🎯 Which element does the selector span style? (a) <h1 class="big"> (b) <p> (c) <h2 id="hero"> (d) <span class="big">
39. 39.True or false: .card is an id selector. (a) True (b) False
40. 40.True or false: body is an id selector. (a) True (b) False

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