CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 551 · 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.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) 1 (d) any number
2. 2.🎯 Which element does the selector span style? (a) <span class="star"> (b) <p> (c) <h1 class="star"> (d) <h2 id="main">
3. 3.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
4. 4.True or false: .menu is an element selector. (a) True (b) False
5. 5.True or false: .note is an element selector. (a) False (b) True
6. 6.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
7. 7.True or false: li is a class selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <span class="star" id="hero">Hello</span> (a) .menu (b) p (c) #hero (d) #top
9. 9.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) #logo (b) .star (c) #main (d) #box
11. 11.True or false: #end is an id selector. (a) False (b) True
12. 12.🎯 Which element does the selector .note style? (a) <div id="note"> (b) <span class="red"> (c) <div class="note"> (d) <div class="big">
13. 13.True or false: .star is an element selector. (a) False (b) True
14. 14.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
15. 15.🎯 Which element does the selector .note style? (a) <h2 id="note"> (b) <h2 class="note"> (c) <h2 class="big"> (d) <li class="red">
16. 16.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
17. 17.True or false: .menu is a class selector. (a) False (b) True
18. 18.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) .hero (b) h1 (c) #hero (d) .star
19. 19.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
20. 20.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
21. 21.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) .box (b) .star (c) p (d) #box
22. 22.🎯 Which element does the selector .box style? (a) <div id="box"> (b) <div class="box"> (c) <div class="star"> (d) <span class="menu">
23. 23.True or false: .big is a class selector. (a) True (b) False
24. 24.🎯 Which element does the selector #end style? (a) <p id="hero"> (b) <p id="end"> (c) <p class="end"> (d) <h1 class="star">
25. 25.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) h1 (b) .red (c) .intro (d) .big
26. 26.True or false: .card is an element selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="box" id="hero">Hello</h2> (a) #top (b) .box (c) li (d) .star
28. 28.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) #menu (b) #top (c) .top (d) .note
29. 29.🎯 Which element does the selector #end style? (a) <h2 class="big"> (b) <h1 class="end"> (c) <h1 id="hero"> (d) <h1 id="end">
30. 30.🎯 Which element does the selector #logo style? (a) <li id="end"> (b) <li class="logo"> (c) <li id="logo"> (d) <div class="star">
31. 31.True or false: .big is an element selector. (a) False (b) True
32. 32.🎯 Can many elements share the same class? (a) No (b) Yes
33. 33.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
34. 34.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) .big (b) .red (c) .top (d) span
35. 35.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) h1 (b) .box (c) p (d) #end
36. 36.True or false: h1 is a class selector. (a) False (b) True
37. 37.True or false: h1 is an id selector. (a) True (b) False
38. 38.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) .big (b) #big (c) p (d) .red
39. 39.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) #hero (b) #red (c) .end (d) .red
40. 40.🎯 Which element does the selector li style? (a) <div> (b) <p id="logo"> (c) <li class="star"> (d) <span class="star">

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