CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 459 · 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.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <p class="intro"> (c) <h1 class="big"> (d) <p id="intro">
3. 3.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="end"> (c) <h1 class="box"> (d) <li class="box">
4. 4.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
5. 5.🎯 Which element does the selector #top style? (a) <li id="intro"> (b) <li class="top"> (c) <li id="top"> (d) <div class="box">
6. 6.True or false: .menu is a class selector. (a) False (b) True
7. 7.🎯 Which element does the selector #main style? (a) <h2 id="logo"> (b) <h2 id="main"> (c) <li class="note"> (d) <h2 class="main">
8. 8.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
9. 9.True or false: h1 is an element selector. (a) True (b) False
10. 10.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
11. 11.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
12. 12.True or false: .note is a class selector. (a) False (b) True
13. 13.🎯 Which element does the selector #hero style? (a) <li class="hero"> (b) <li id="top"> (c) <div class="big"> (d) <li id="hero">
14. 14.True or false: .menu is an element selector. (a) True (b) False
15. 15.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
16. 16.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h2 id="logo"> (c) <p> (d) <h1 class="red">
17. 17.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) #logo (b) .logo (c) div (d) #end
18. 18.True or false: body is a class selector. (a) False (b) True
19. 19.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
20. 20.True or false: li is a class selector. (a) False (b) True
21. 21.True or false: #main is an id selector. (a) True (b) False
22. 22.True or false: .card is an id selector. (a) True (b) False
23. 23.🎯 Which element does the selector .red style? (a) <h2 id="red"> (b) <h2 class="box"> (c) <li class="star"> (d) <h2 class="red">
24. 24.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) #top (b) .big (c) .hero (d) .note
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="box" id="hero">Hello</h2> (a) #top (b) li (c) .hero (d) #hero
26. 26.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
27. 27.🎯 Which element does the selector .big style? (a) <span id="big"> (b) <span class="red"> (c) <p class="box"> (d) <span class="big">
28. 28.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) #big (b) div (c) li (d) .red
29. 29.🎯 Which element does the selector p style? (a) <p class="big"> (b) <h1> (c) <li id="main"> (d) <h2 class="big">
30. 30.🎯 Which element does the selector .box style? (a) <span class="star"> (b) <span id="box"> (c) <p class="menu"> (d) <span class="box">
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) .star (b) #box (c) #intro (d) #main
32. 32.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) #end (b) .big (c) .end (d) #note
33. 33.🎯 Which element does the selector .box style? (a) <p id="box"> (b) <h1 class="menu"> (c) <p class="box"> (d) <p class="star">
34. 34.True or false: li is an element selector. (a) False (b) True
35. 35.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
36. 36.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
37. 37.True or false: h1 is a class selector. (a) True (b) False
38. 38.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span> (a) #hero (b) p (c) .hero (d) #top
39. 39.True or false: #end is a class selector. (a) True (b) False
40. 40.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector

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