CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 837 · 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 sign starts an id selector? (a) . (b) & (c) @ (d) #
2. 2.🎯 Which element does the selector #logo style? (a) <div class="note"> (b) <li class="logo"> (c) <li id="end"> (d) <li id="logo">
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="main">Hello</h1> (a) .note (b) h2 (c) .menu (d) .main
4. 4.True or false: img is an id selector. (a) False (b) True
5. 5.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
6. 6.True or false: .menu is an element selector. (a) False (b) True
7. 7.🎯 Which element does the selector li style? (a) <p id="main"> (b) <div> (c) <li class="box"> (d) <span class="box">
8. 8.🎯 Which CSS selector matches this element?
   <div class="note" id="hero">Hello</div> (a) #hero (b) .hero (c) span (d) .big
9. 9.True or false: #end is an id selector. (a) False (b) True
10. 10.True or false: #logo is an id selector. (a) True (b) False
11. 11.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) .intro (b) .box (c) .red (d) #red
12. 12.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
13. 13.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
14. 14.True or false: .card is an id selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2> (a) .logo (b) #end (c) .red (d) li
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) .logo (b) .red (c) h1 (d) #big
17. 17.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
18. 18.🎯 Which element does the selector p style? (a) <h2 class="big"> (b) <h1> (c) <p class="big"> (d) <li id="logo">
19. 19.True or false: #main is an id selector. (a) True (b) False
20. 20.🎯 Which CSS selector matches this element?
    <li class="red" id="main">Hello</li> (a) #logo (b) .box (c) div (d) #main
21. 21.🎯 Which element does the selector #main style? (a) <span id="main"> (b) <span class="main"> (c) <span id="logo"> (d) <p class="box">
22. 22.True or false: body is a class selector. (a) False (b) True
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) .logo (b) #logo (c) #big (d) #end
24. 24.True or false: h1 is a class selector. (a) True (b) False
25. 25.🎯 Which element does the selector #end style? (a) <div id="end"> (b) <div class="end"> (c) <div id="hero"> (d) <span class="note">
26. 26.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
27. 27.🎯 Which element does the selector #main style? (a) <h2 class="main"> (b) <li class="big"> (c) <h2 id="logo"> (d) <h2 id="main">
28. 28.🎯 Which element does the selector h2 style? (a) <h2 class="red"> (b) <span id="main"> (c) <div class="red"> (d) <li>
29. 29.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) .red (b) .hero (c) .big (d) #top
30. 30.🎯 Can many elements share the same class? (a) No (b) Yes
31. 31.True or false: .star is an element selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <div class="menu" id="logo">Hello</div> (a) #end (b) #menu (c) #logo (d) .logo
33. 33.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) h1 (b) .red (c) .big (d) #main
34. 34.🎯 Which element does the selector .box style? (a) <div class="box"> (b) <div id="box"> (c) <div class="star"> (d) <span class="menu">
35. 35.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li id="note"> (c) <li class="big"> (d) <li class="note">
36. 36.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
37. 37.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) div (b) span (c) .star (d) #box
38. 38.True or false: li is an element selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p> (a) h1 (b) .logo (c) #logo (d) #end
40. 40.🎯 Which element does the selector .big style? (a) <h1 class="red"> (b) <h2 class="box"> (c) <h1 class="big"> (d) <h1 id="big">

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