CSS Worksheet: Selectors Class and Id

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

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