CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 240 · 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?
   <h1 class="star" id="hero">Hello</h1> (a) .star (b) h2 (c) #star (d) .menu
2. 2.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
3. 3.True or false: img is an id selector. (a) True (b) False
4. 4.🎯 Which element does the selector .menu style? (a) <span id="menu"> (b) <span class="note"> (c) <span class="menu"> (d) <p class="big">
5. 5.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
6. 6.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
7. 7.True or false: h1 is an id selector. (a) True (b) False
8. 8.🎯 Which element does the selector #intro style? (a) <h1 class="big"> (b) <p class="intro"> (c) <p id="main"> (d) <p id="intro">
9. 9.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
10. 10.True or false: .card is an id selector. (a) True (b) False
11. 11.True or false: #top is an element selector. (a) True (b) False
12. 12.🎯 Which CSS selector matches this element?
    <div class="star" id="logo">Hello</div> (a) #end (b) .logo (c) .star (d) #star
13. 13.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 id="note"> (c) <h1 class="note"> (d) <h1 class="big">
14. 14.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) .big (b) #end (c) h2 (d) #big
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) .red (b) h1 (c) #end (d) h2
16. 16.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) #end (b) #hero (c) #big (d) .red
17. 17.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) .main (b) .note (c) .menu (d) #menu
18. 18.True or false: #main is an id selector. (a) False (b) True
19. 19.🎯 Which element does the selector .big style? (a) <div id="big"> (b) <div class="red"> (c) <span class="box"> (d) <div class="big">
20. 20.🎯 Can many elements share the same class? (a) Yes (b) No
21. 21.True or false: #hero is an id selector. (a) True (b) False
22. 22.True or false: li is an id selector. (a) True (b) False
23. 23.🎯 Which element does the selector h1 style? (a) <h1 class="menu"> (b) <h2> (c) <li class="menu"> (d) <div id="intro">
24. 24.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) p (b) #red (c) .box (d) .red
25. 25.True or false: #logo is an id selector. (a) True (b) False
26. 26.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
27. 27.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) h1 (b) #logo (c) .menu (d) .star
28. 28.True or false: li is a class selector. (a) True (b) False
29. 29.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) h1 (b) #intro (c) .box (d) #top
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) h1 (b) h2 (c) .red (d) #main
31. 31.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
32. 32.True or false: .menu is an id selector. (a) True (b) False
33. 33.True or false: .card is a class selector. (a) True (b) False
34. 34.🎯 Which element does the selector li style? (a) <li class="big"> (b) <span class="big"> (c) <p id="end"> (d) <div>
35. 35.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) #intro (b) #top (c) .red (d) #big
37. 37.🎯 Which element does the selector #main style? (a) <span id="logo"> (b) <span class="main"> (c) <span id="main"> (d) <p class="menu">
38. 38.True or false: body is a class selector. (a) True (b) False
39. 39.True or false: h1 is an element selector. (a) True (b) False
40. 40.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector

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