CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 630 · 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 body? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 Which CSS selector matches this element?
   <p class="note" id="intro">Hello</p> (a) .intro (b) #main (c) #intro (d) .big
3. 3.True or false: #logo is a class selector. (a) False (b) True
4. 4.True or false: .star is an element selector. (a) False (b) True
5. 5.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
6. 6.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
7. 7.🎯 Can many elements share the same class? (a) No (b) Yes
8. 8.True or false: p is an element selector. (a) True (b) False
9. 9.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
10. 10.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
11. 11.🎯 Which element does the selector .box style? (a) <h1 class="star"> (b) <h1 class="box"> (c) <h2 class="menu"> (d) <h1 id="box">
12. 12.🎯 Which element does the selector .note style? (a) <div class="big"> (b) <div id="note"> (c) <div class="note"> (d) <span class="red">
13. 13.🎯 Which element does the selector #intro style? (a) <h1 id="main"> (b) <h2 class="red"> (c) <h1 id="intro"> (d) <h1 class="intro">
14. 14.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
15. 15.True or false: body is an element selector. (a) False (b) True
16. 16.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) .red (b) p (c) .hero (d) #top
18. 18.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="intro"> (c) <h1 class="box"> (d) <span class="box">
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) #menu (b) .note (c) h1 (d) #intro
20. 20.🎯 Which element does the selector #end style? (a) <p class="box"> (b) <span id="end"> (c) <span id="hero"> (d) <span class="end">
21. 21.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) #big (b) .top (c) .big (d) span
22. 22.🎯 Which element does the selector h1 style? (a) <h1 class="note"> (b) <div id="top"> (c) <li class="note"> (d) <h2>
23. 23.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
24. 24.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) #box (b) #intro (c) .box (d) .top
25. 25.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
26. 26.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) #intro (b) #box (c) .intro (d) #main
27. 27.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
28. 28.True or false: .big is a class selector. (a) True (b) False
29. 29.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <h2 class="box"> (c) <li> (d) <div class="box">
30. 30.🎯 Which element does the selector p style? (a) <p class="note"> (b) <h1> (c) <li id="hero"> (d) <h2 class="note">
31. 31.🎯 Which element does the selector #top style? (a) <h2 class="note"> (b) <h1 id="intro"> (c) <h1 id="top"> (d) <h1 class="top">
32. 32.True or false: #top is a class selector. (a) False (b) True
33. 33.🎯 Which element does the selector #hero style? (a) <h1 class="menu"> (b) <p id="top"> (c) <p id="hero"> (d) <p class="hero">
34. 34.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
35. 35.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) .hero (b) #top (c) #box (d) div
36. 36.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) #note (b) #end (c) .logo (d) div
37. 37.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
38. 38.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
39. 39.🎯 Which element does the selector h2 style? (a) <h2 class="note"> (b) <div class="note"> (c) <li> (d) <span id="logo">
40. 40.🎯 Which element does the selector .red style? (a) <h1 class="star"> (b) <p id="red"> (c) <p class="box"> (d) <p class="red">

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