CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 386 · 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 element selector (b) a class selector (c) an id selector
2. 2.True or false: .menu is an id selector. (a) False (b) True
3. 3.True or false: li is an element selector. (a) True (b) False
4. 4.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
5. 5.True or false: #end is a class selector. (a) True (b) False
6. 6.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
7. 7.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
8. 8.True or false: .note is an element selector. (a) True (b) False
9. 9.True or false: #top is a class selector. (a) False (b) True
10. 10.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
11. 11.True or false: .star is an element selector. (a) False (b) True
12. 12.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
13. 13.True or false: p is an id selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) #box (b) .hero (c) p (d) h1
15. 15.True or false: .big is a class selector. (a) False (b) True
16. 16.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="big"> (c) <h1 class="big"> (d) <div id="end">
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) h2 (b) h1 (c) .top (d) .big
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) #box (b) h2 (c) #main (d) h1
19. 19.True or false: #main is an element selector. (a) False (b) True
20. 20.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
21. 21.🎯 Which element does the selector .box style? (a) <p id="box"> (b) <h1 class="menu"> (c) <p class="box"> (d) <p class="star">
22. 22.True or false: h1 is a class selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) #logo (b) .main (c) div (d) .menu
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) #end (b) .logo (c) #box (d) .box
25. 25.True or false: body is an id selector. (a) True (b) False
26. 26.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2> (a) #main (b) .intro (c) .menu (d) .note
28. 28.True or false: #main is an id selector. (a) False (b) True
29. 29.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
30. 30.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
31. 31.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
32. 32.🎯 Which element does the selector .star style? (a) <h1 class="menu"> (b) <h1 id="star"> (c) <h2 class="note"> (d) <h1 class="star">
33. 33.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) .note (b) .menu (c) #logo (d) p
34. 34.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) .red (b) h1 (c) #big (d) p
35. 35.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
36. 36.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) #big (b) #intro (c) div (d) .top
37. 37.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) .logo (b) div (c) #end (d) li
38. 38.True or false: .note is a class selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) li (b) .red (c) .big (d) #main
40. 40.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) p (b) #logo (c) #big (d) #main

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