CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 593 · 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 #main? (a) an id selector (b) a class selector (c) an element selector
2. 2.🎯 Which element does the selector li style? (a) <div> (b) <p id="end"> (c) <li class="star"> (d) <span class="star">
3. 3.🎯 Which CSS selector matches this element?
   <div class="star" id="main">Hello</div> (a) span (b) div (c) #logo (d) #star
4. 4.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
5. 5.🎯 Which element does the selector .box style? (a) <h1 class="menu"> (b) <p class="star"> (c) <p id="box"> (d) <p class="box">
6. 6.🎯 Which CSS selector matches this element?
   <li class="menu" id="top">Hello</li> (a) #intro (b) #top (c) div (d) #menu
7. 7.🎯 Which CSS selector matches this element?
   <p class="star" id="top">Hello</p> (a) #star (b) .star (c) h1 (d) .menu
8. 8.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <div> (c) <li class="note"> (d) <span class="note">
9. 9.True or false: .menu is a class selector. (a) True (b) False
10. 10.🎯 Which element does the selector .note style? (a) <p class="red"> (b) <span class="note"> (c) <span id="note"> (d) <span class="big">
11. 11.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) #end (b) .big (c) .logo (d) li
12. 12.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
13. 13.True or false: #top is a class selector. (a) True (b) False
14. 14.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
15. 15.True or false: .card is an element selector. (a) True (b) False
16. 16.🎯 Can many elements share the same class? (a) No (b) Yes
17. 17.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
18. 18.True or false: #logo is a class selector. (a) False (b) True
19. 19.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
20. 20.🎯 Which element does the selector .box style? (a) <li class="menu"> (b) <h2 id="box"> (c) <h2 class="star"> (d) <h2 class="box">
21. 21.True or false: h1 is an element selector. (a) False (b) True
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) #top (b) h1 (c) .hero (d) .box
23. 23.True or false: .star is an id selector. (a) False (b) True
24. 24.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <div id="end"> (c) <span class="star"> (d) <div id="hero">
25. 25.🎯 Which element does the selector li style? (a) <span class="big"> (b) <p id="main"> (c) <div> (d) <li class="big">
26. 26.🎯 Which element does the selector #hero style? (a) <p class="hero"> (b) <h1 class="box"> (c) <p id="hero"> (d) <p id="top">
27. 27.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 Which element does the selector .big style? (a) <h2 class="big"> (b) <h2 id="big"> (c) <li class="box"> (d) <h2 class="red">
29. 29.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
30. 30.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) .box (b) .star (c) #box (d) .logo
31. 31.True or false: .note is an element selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) #logo (b) #note (c) .main (d) .note
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) .top (b) #intro (c) .star (d) #top
34. 34.True or false: h1 is an id selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) .logo (b) #end (c) .big (d) .red
36. 36.True or false: .star is an element selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) h2 (b) #hero (c) #note (d) #end
38. 38.🎯 Which CSS selector matches this element?
    <span class="menu" id="logo">Hello</span> (a) .note (b) .logo (c) #end (d) span
39. 39.True or false: .menu is an id selector. (a) False (b) True
40. 40.True or false: #hero is an element selector. (a) False (b) True

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