CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 437 · 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: .note is a class selector. (a) False (b) True
2. 2.True or false: #main is an element selector. (a) True (b) False
3. 3.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
4. 4.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
5. 5.🎯 Which element does the selector li style? (a) <div> (b) <p id="hero"> (c) <span class="note"> (d) <li class="note">
6. 6.True or false: h1 is an element selector. (a) True (b) False
7. 7.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
8. 8.🎯 Which element does the selector .note style? (a) <div id="note"> (b) <div class="note"> (c) <span class="red"> (d) <div class="big">
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="intro">Hello</h1> (a) .intro (b) .note (c) #main (d) h1
10. 10.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) .red (b) .intro (c) div (d) #big
11. 11.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
12. 12.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
13. 13.🎯 Which element does the selector div style? (a) <h1 id="hero"> (b) <div class="red"> (c) <p class="red"> (d) <span>
14. 14.🎯 Which element does the selector .note style? (a) <span id="note"> (b) <span class="big"> (c) <span class="note"> (d) <p class="red">
15. 15.True or false: #main is an id selector. (a) False (b) True
16. 16.🎯 Which element does the selector p style? (a) <li id="end"> (b) <h1> (c) <p class="box"> (d) <h2 class="box">
17. 17.🎯 Which element does the selector #end style? (a) <h1 id="end"> (b) <h1 class="end"> (c) <h2 class="big"> (d) <h1 id="hero">
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) .top (b) #red (c) #top (d) #intro
19. 19.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
20. 20.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
21. 21.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
22. 22.🎯 Can many elements share the same class? (a) No (b) Yes
23. 23.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) .menu (b) p (c) .top (d) span
24. 24.True or false: .card is an id selector. (a) True (b) False
25. 25.🎯 Which element does the selector .big style? (a) <div class="red"> (b) <div id="big"> (c) <span class="box"> (d) <div class="big">
26. 26.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
27. 27.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #red (b) span (c) .red (d) #main
28. 28.True or false: #top is an element selector. (a) False (b) True
29. 29.True or false: .card is an element selector. (a) True (b) False
30. 30.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
31. 31.🎯 Which CSS selector matches this element?
    <div class="star" id="logo">Hello</div> (a) #end (b) .menu (c) #logo (d) #star
32. 32.🎯 Which element does the selector #intro style? (a) <span class="big"> (b) <div id="intro"> (c) <div id="main"> (d) <div class="intro">
33. 33.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) .star (b) li (c) #intro (d) #box
34. 34.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) #box (b) .star (c) .intro (d) div
35. 35.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) #main (b) #star (c) h1 (d) p
36. 36.True or false: .big is an id selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) .hero (b) #red (c) h2 (d) .box
38. 38.🎯 Which element does the selector .note style? (a) <p class="big"> (b) <h1 class="red"> (c) <p id="note"> (d) <p class="note">
39. 39.🎯 Which element does the selector #intro style? (a) <li class="intro"> (b) <li id="intro"> (c) <li id="main"> (d) <div class="box">
40. 40.True or false: #top is an id selector. (a) False (b) True

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