CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 346 · 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: #main is an element selector. (a) True (b) False
2. 2.🎯 Which sign starts a class selector? (a) & (b) @ (c) . (d) #
3. 3.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
4. 4.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
5. 5.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="main">Hello</h2> (a) #logo (b) #menu (c) .menu (d) .main
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="main">Hello</h1> (a) #logo (b) .main (c) .menu (d) #menu
7. 7.True or false: .note is an element selector. (a) True (b) False
8. 8.True or false: #hero is a class selector. (a) False (b) True
9. 9.True or false: img is an id selector. (a) True (b) False
10. 10.True or false: .note is an id selector. (a) False (b) True
11. 11.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
12. 12.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
13. 13.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) .red (b) #hero (c) .hero (d) #big
14. 14.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
15. 15.True or false: #end is an id selector. (a) False (b) True
16. 16.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
17. 17.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 1 (d) 5
18. 18.🎯 Which element does the selector p style? (a) <h2 class="big"> (b) <h1> (c) <p class="big"> (d) <li id="main">
19. 19.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) h1 (b) .box (c) .star (d) #box
20. 20.🎯 Which CSS selector matches this element?
    <p class="star" id="end">Hello</p> (a) #star (b) #hero (c) p (d) .menu
21. 21.🎯 Which element does the selector li style? (a) <div> (b) <span class="menu"> (c) <li class="menu"> (d) <p id="intro">
22. 22.True or false: #top is an id selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) #top (b) #star (c) .menu (d) .top
24. 24.🎯 Which element does the selector h1 style? (a) <li class="box"> (b) <h1 class="box"> (c) <div id="top"> (d) <h2>
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) .star (b) #logo (c) #star (d) .menu
26. 26.🎯 Can many elements share the same class? (a) No (b) Yes
27. 27.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="note"> (c) <li id="intro"> (d) <p class="note">
28. 28.🎯 Which element does the selector #top style? (a) <h2 id="top"> (b) <h2 id="intro"> (c) <h2 class="top"> (d) <li class="red">
29. 29.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="star" id="logo">Hello</h1> (a) h2 (b) #star (c) #logo (d) #end
31. 31.True or false: .note is a class selector. (a) True (b) False
32. 32.True or false: .card is an element selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) .top (b) h1 (c) #menu (d) .note
34. 34.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #note (b) .big (c) .note (d) #intro
35. 35.True or false: li is an element selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #main (b) #red (c) .box (d) div
37. 37.🎯 Which element does the selector .box style? (a) <p class="box"> (b) <p id="box"> (c) <h1 class="menu"> (d) <p class="star">
38. 38.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="logo"> (c) <li id="end"> (d) <div class="box">
39. 39.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
40. 40.🎯 Which element does the selector h1 style? (a) <h1 class="note"> (b) <div id="logo"> (c) <li class="note"> (d) <h2>

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