CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 612 · 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 .menu? (a) a class selector (b) an element selector (c) an id selector
2. 2.True or false: #end is an id selector. (a) True (b) False
3. 3.True or false: #hero is a class selector. (a) True (b) False
4. 4.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
5. 5.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
6. 6.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
7. 7.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
8. 8.🎯 Which element does the selector div style? (a) <div class="note"> (b) <p class="note"> (c) <span> (d) <h1 id="hero">
9. 9.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) 5 (d) any number
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) h2 (b) #intro (c) .top (d) h1
11. 11.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) #note (b) .big (c) p (d) .note
12. 12.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
13. 13.🎯 Which element does the selector #logo style? (a) <div class="logo"> (b) <span class="red"> (c) <div id="logo"> (d) <div id="end">
14. 14.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <h1 class="red"> (c) <div id="main"> (d) <h2>
15. 15.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <span class="top"> (c) <p class="big"> (d) <span id="top">
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1> (a) .logo (b) .star (c) h2 (d) h1
17. 17.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) .logo (b) h1 (c) p (d) .big
18. 18.True or false: .big is a class selector. (a) True (b) False
19. 19.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) .logo (b) .menu (c) #menu (d) li
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) .note (b) #note (c) .hero (d) #top
22. 22.True or false: #hero is an element selector. (a) False (b) True
23. 23.True or false: #hero is an id selector. (a) True (b) False
24. 24.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
25. 25.🎯 Which element does the selector .menu style? (a) <h1 id="menu"> (b) <h1 class="note"> (c) <h2 class="big"> (d) <h1 class="menu">
26. 26.True or false: #top is a class selector. (a) True (b) False
27. 27.🎯 Which element does the selector .note style? (a) <h1 class="note"> (b) <h1 class="big"> (c) <h2 class="red"> (d) <h1 id="note">
28. 28.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) #menu (b) #logo (c) .main (d) .menu
29. 29.True or false: .big is an element selector. (a) False (b) True
30. 30.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <h2> (c) <h1 class="note"> (d) <li class="note">
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) h2 (b) #intro (c) #big (d) .intro
32. 32.True or false: .note is an element selector. (a) False (b) True
33. 33.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
34. 34.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) #hero (b) #note (c) .end (d) #end
35. 35.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) .end (b) p (c) #big (d) .red
36. 36.True or false: .note is a class selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) .star (b) h1 (c) #main (d) #box
38. 38.True or false: #main is an id selector. (a) False (b) True
39. 39.🎯 Which element does the selector div style? (a) <h1 id="logo"> (b) <p class="menu"> (c) <span> (d) <div class="menu">
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) #top (b) li (c) #hero (d) #star

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