CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 725 · 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: .menu is an element selector. (a) False (b) True
2. 2.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
3. 3.🎯 Which element does the selector li style? (a) <li class="menu"> (b) <p id="logo"> (c) <span class="menu"> (d) <div>
4. 4.🎯 Which CSS selector matches this element?
   <span class="note" id="end">Hello</span> (a) #hero (b) span (c) .big (d) #note
5. 5.🎯 Which CSS selector matches this element?
   <p class="note" id="main">Hello</p> (a) .main (b) #main (c) #logo (d) .big
6. 6.🎯 Which CSS selector matches this element?
   <span class="star" id="main">Hello</span> (a) .star (b) #logo (c) p (d) #star
7. 7.🎯 Which CSS selector matches this element?
   <p class="red" id="intro">Hello</p> (a) h1 (b) #red (c) .box (d) p
8. 8.🎯 Which element does the selector .big style? (a) <div class="box"> (b) <li class="red"> (c) <li id="big"> (d) <li class="big">
9. 9.🎯 Which element does the selector #end style? (a) <h1 id="hero"> (b) <h1 class="end"> (c) <h1 id="end"> (d) <h2 class="menu">
10. 10.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="end"> (c) <li class="red"> (d) <h1 class="red">
12. 12.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) .box (b) #red (c) p (d) #intro
13. 13.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
14. 14.True or false: #top is an element selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) .red (b) div (c) #hero (d) .hero
16. 16.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="logo"> (c) <li class="menu"> (d) <h1 class="menu">
17. 17.🎯 Which element does the selector #top style? (a) <div id="intro"> (b) <div class="top"> (c) <div id="top"> (d) <span class="box">
18. 18.True or false: .star is a class selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) h1 (b) .red (c) .main (d) .box
20. 20.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
21. 21.🎯 Can many elements share the same class? (a) No (b) Yes
22. 22.True or false: .card is an id selector. (a) True (b) False
23. 23.🎯 Which element does the selector .note style? (a) <p class="red"> (b) <span class="big"> (c) <span class="note"> (d) <span id="note">
24. 24.True or false: #main is an id selector. (a) True (b) False
25. 25.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p class="red"> (c) <p class="big"> (d) <p id="big">
26. 26.True or false: .note is an id selector. (a) False (b) True
27. 27.True or false: #end is a class selector. (a) True (b) False
28. 28.True or false: #top is a class selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) #intro (b) .star (c) h2 (d) #star
30. 30.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
31. 31.🎯 Which sign starts a class selector? (a) @ (b) . (c) # (d) &
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1> (a) .end (b) #end (c) .star (d) #box
33. 33.True or false: h1 is an id selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) #logo (b) #menu (c) li (d) #end
35. 35.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="hero"> (c) <div class="note"> (d) <h2 class="note">
36. 36.🎯 Which element does the selector .red style? (a) <li class="box"> (b) <li class="red"> (c) <li id="red"> (d) <div class="star">
37. 37.🎯 Which element does the selector .note style? (a) <div class="note"> (b) <div class="big"> (c) <span class="red"> (d) <div id="note">
38. 38.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
39. 39.🎯 Which element does the selector #logo style? (a) <span class="note"> (b) <div id="end"> (c) <div id="logo"> (d) <div class="logo">
40. 40.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) #big (b) #end (c) .red (d) #hero

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