CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 610 · 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 #logo? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 Which CSS selector matches this element?
   <p class="box" id="logo">Hello</p> (a) #box (b) p (c) h1 (d) .star
3. 3.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
4. 4.🎯 Can many elements share the same class? (a) Yes (b) No
5. 5.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
6. 6.True or false: .big is an id selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="big" id="logo">Hello</h1> (a) #end (b) .big (c) .logo (d) .red
8. 8.🎯 Which CSS selector matches this element?
   <li class="big" id="main">Hello</li> (a) #main (b) #big (c) div (d) .main
9. 9.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
10. 10.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
11. 11.🎯 Which element does the selector p style? (a) <h2 class="note"> (b) <p class="note"> (c) <li id="main"> (d) <h1>
12. 12.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
13. 13.True or false: .big is an element selector. (a) True (b) False
14. 14.True or false: .note is a class selector. (a) False (b) True
15. 15.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
16. 16.True or false: h1 is a class selector. (a) True (b) False
17. 17.True or false: .star is an id selector. (a) True (b) False
18. 18.True or false: #hero is an id selector. (a) False (b) True
19. 19.True or false: #main is an id selector. (a) True (b) False
20. 20.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
21. 21.🎯 Which element does the selector .note style? (a) <h2 id="note"> (b) <h2 class="note"> (c) <li class="red"> (d) <h2 class="big">
22. 22.True or false: .menu is a class selector. (a) True (b) False
23. 23.🎯 Which element does the selector .star style? (a) <span class="note"> (b) <div class="menu"> (c) <div id="star"> (d) <div class="star">
24. 24.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <h1 class="menu"> (c) <li class="menu"> (d) <h2>
26. 26.🎯 Which element does the selector #intro style? (a) <li class="intro"> (b) <li id="main"> (c) <li id="intro"> (d) <div class="star">
27. 27.🎯 Which element does the selector h1 style? (a) <li class="big"> (b) <h1 class="big"> (c) <h2> (d) <div id="hero">
28. 28.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) h2 (b) li (c) .hero (d) .box
30. 30.True or false: p is a class selector. (a) True (b) False
31. 31.🎯 Which element does the selector #main style? (a) <h1 class="red"> (b) <p id="main"> (c) <p id="logo"> (d) <p class="main">
32. 32.🎯 Which element does the selector .big style? (a) <p id="big"> (b) <p class="red"> (c) <h1 class="box"> (d) <p class="big">
33. 33.🎯 Which element does the selector .menu style? (a) <li class="big"> (b) <h2 class="note"> (c) <h2 class="menu"> (d) <h2 id="menu">
34. 34.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span> (a) #menu (b) #hero (c) .hero (d) p
35. 35.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) .box (b) .intro (c) .red (d) #red
36. 36.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) div (b) #intro (c) #top (d) #red
37. 37.True or false: .card is a class selector. (a) True (b) False
38. 38.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) 5 (d) any number
39. 39.True or false: img is an element selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) h1 (b) h2 (c) #note (d) .big

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