CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 362 · 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.🎯 Which CSS selector matches this element?
   <h1 class="big" id="top">Hello</h1> (a) h2 (b) .big (c) .red (d) .top
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="hero">Hello</h1> (a) #hero (b) #top (c) .hero (d) h2
3. 3.True or false: #main is a class selector. (a) False (b) True
4. 4.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
5. 5.🎯 Which element does the selector .big style? (a) <div class="box"> (b) <li class="big"> (c) <li id="big"> (d) <li class="red">
6. 6.🎯 Which element does the selector #intro style? (a) <h1 id="main"> (b) <h1 id="intro"> (c) <h1 class="intro"> (d) <h2 class="star">
7. 7.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
8. 8.True or false: li is an element selector. (a) True (b) False
9. 9.True or false: .card is an element selector. (a) True (b) False
10. 10.🎯 Which element does the selector .red style? (a) <p class="box"> (b) <p id="red"> (c) <h1 class="star"> (d) <p class="red">
11. 11.True or false: h1 is a class selector. (a) True (b) False
12. 12.🎯 Which element does the selector .note style? (a) <h2 class="big"> (b) <h2 id="note"> (c) <li class="red"> (d) <h2 class="note">
13. 13.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) .top (b) .star (c) h2 (d) #top
14. 14.🎯 Which element does the selector .note style? (a) <li class="big"> (b) <li id="note"> (c) <div class="red"> (d) <li class="note">
15. 15.🎯 Can many elements share the same class? (a) Yes (b) No
16. 16.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
17. 17.🎯 Which element does the selector .red style? (a) <div class="red"> (b) <span class="star"> (c) <div id="red"> (d) <div class="box">
18. 18.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
19. 19.True or false: li is an id selector. (a) False (b) True
20. 20.🎯 Which element does the selector .big style? (a) <h1 class="red"> (b) <h1 class="big"> (c) <h1 id="big"> (d) <h2 class="box">
21. 21.🎯 Which element does the selector span style? (a) <span class="big"> (b) <p> (c) <h2 id="main"> (d) <h1 class="big">
22. 22.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
23. 23.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <li> (c) <h2 class="red"> (d) <div class="red">
24. 24.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) h1 (b) #red (c) .red (d) .intro
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) #hero (b) #box (c) .box (d) .end
26. 26.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
27. 27.True or false: .star is a class selector. (a) True (b) False
28. 28.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
29. 29.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) .big (b) .main (c) p (d) h1
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) #box (b) h2 (c) h1 (d) .star
31. 31.True or false: #logo is an id selector. (a) True (b) False
32. 32.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
33. 33.🎯 Which element does the selector #main style? (a) <div class="big"> (b) <li id="logo"> (c) <li id="main"> (d) <li class="main">
34. 34.🎯 Which element does the selector #logo style? (a) <p class="logo"> (b) <p id="end"> (c) <h1 class="note"> (d) <p id="logo">
35. 35.True or false: .note is a class selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) li (b) #main (c) .big (d) h2
37. 37.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
38. 38.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <li class="red"> (c) <div class="star"> (d) <li class="box">
39. 39.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
40. 40.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector

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