CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 120 · 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.True or false: img is an id selector. (a) True (b) False
2. 2.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h1 id="logo"> (c) <h1 id="main"> (d) <h2 class="big">
3. 3.🎯 Can many elements share the same class? (a) No (b) Yes
4. 4.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
5. 5.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
6. 6.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <h2 class="star"> (c) <li> (d) <div class="star">
7. 7.True or false: #hero is an id selector. (a) False (b) True
8. 8.True or false: p is an id selector. (a) False (b) True
9. 9.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
10. 10.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) #red (b) .box (c) div (d) .red
11. 11.🎯 Which element does the selector #top style? (a) <div id="intro"> (b) <div id="top"> (c) <span class="star"> (d) <div class="top">
12. 12.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
13. 13.🎯 Which element does the selector #hero style? (a) <li id="top"> (b) <li class="hero"> (c) <div class="star"> (d) <li id="hero">
14. 14.🎯 Which element does the selector #end style? (a) <span class="end"> (b) <p class="big"> (c) <span id="hero"> (d) <span id="end">
15. 15.🎯 Which element does the selector .red style? (a) <p class="star"> (b) <span class="box"> (c) <span class="red"> (d) <span id="red">
16. 16.True or false: img is an element selector. (a) False (b) True
17. 17.True or false: #main is an id selector. (a) True (b) False
18. 18.🎯 Which element does the selector li style? (a) <div> (b) <p id="main"> (c) <span class="star"> (d) <li class="star">
19. 19.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
20. 20.🎯 Which element does the selector span style? (a) <span class="star"> (b) <h1 class="star"> (c) <h2 id="hero"> (d) <p>
21. 21.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
22. 22.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
23. 23.🎯 Which element does the selector .red style? (a) <div class="box"> (b) <div id="red"> (c) <div class="red"> (d) <span class="star">
24. 24.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
25. 25.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
26. 26.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="box"> (c) <span id="end"> (d) <h2 class="box">
27. 27.True or false: #hero is a class selector. (a) True (b) False
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) .menu (b) .logo (c) h2 (d) li
29. 29.True or false: body is a class selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) #intro (b) .top (c) p (d) span
31. 31.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) .red (b) h1 (c) #red (d) .box
32. 32.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) .big (b) .intro (c) #intro (d) #main
33. 33.🎯 Which element does the selector #hero style? (a) <p class="big"> (b) <span id="hero"> (c) <span id="top"> (d) <span class="hero">
34. 34.🎯 Which element does the selector #end style? (a) <h1 class="menu"> (b) <p class="end"> (c) <p id="hero"> (d) <p id="end">
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) #end (b) #menu (c) .menu (d) .note
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2> (a) .red (b) .box (c) .logo (d) #end
37. 37.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
38. 38.True or false: .note is an element selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) .red (b) .box (c) #red (d) #intro
40. 40.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector

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