CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 780 · 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.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
2. 2.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
3. 3.True or false: li is an element selector. (a) False (b) True
4. 4.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="red" id="logo">Hello</h1> (a) #red (b) #end (c) h2 (d) .red
6. 6.🎯 Which element does the selector .box style? (a) <h1 class="star"> (b) <h1 id="box"> (c) <h1 class="box"> (d) <h2 class="menu">
7. 7.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
8. 8.True or false: #end is an id selector. (a) True (b) False
9. 9.True or false: h1 is an element selector. (a) True (b) False
10. 10.True or false: #top is an element selector. (a) False (b) True
11. 11.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
12. 12.🎯 Which element does the selector .big style? (a) <h2 class="red"> (b) <h2 id="big"> (c) <li class="box"> (d) <h2 class="big">
13. 13.True or false: body is an element selector. (a) True (b) False
14. 14.🎯 Which element does the selector #logo style? (a) <p id="end"> (b) <p id="logo"> (c) <h1 class="red"> (d) <p class="logo">
15. 15.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="box"> (c) <h2 id="intro"> (d) <span class="box">
16. 16.🎯 Can many elements share the same class? (a) No (b) Yes
17. 17.True or false: #main is an id selector. (a) False (b) True
18. 18.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
19. 19.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h2> (c) <div id="top"> (d) <h1 class="note">
20. 20.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) #logo (b) span (c) div (d) .star
21. 21.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) h1 (b) #red (c) #end (d) p
22. 22.True or false: body is an id selector. (a) False (b) True
23. 23.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) #main (b) p (c) span (d) #box
24. 24.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
25. 25.🎯 Which element does the selector .red style? (a) <p id="red"> (b) <h1 class="star"> (c) <p class="red"> (d) <p class="box">
26. 26.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) .logo (b) .star (c) .menu (d) #star
27. 27.True or false: .card is a class selector. (a) True (b) False
28. 28.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) li (b) .main (c) #big (d) .red
29. 29.🎯 Which element does the selector .note style? (a) <div class="big"> (b) <div class="note"> (c) <span class="red"> (d) <div id="note">
30. 30.🎯 Which element does the selector #end style? (a) <h1 id="end"> (b) <h1 id="hero"> (c) <h1 class="end"> (d) <h2 class="box">
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) #main (b) .intro (c) .red (d) #intro
32. 32.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h1 class="hero"> (c) <h2 class="box"> (d) <h1 id="top">
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) li (b) .top (c) #top (d) #intro
34. 34.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <div id="hero"> (c) <span class="menu"> (d) <div id="end">
35. 35.🎯 Which element does the selector p style? (a) <h2 class="red"> (b) <li id="hero"> (c) <p class="red"> (d) <h1>
36. 36.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) div (b) #big (c) span (d) .red
37. 37.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
38. 38.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) .intro (b) #big (c) h1 (d) #intro
39. 39.True or false: #main is an element selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) #hero (b) .menu (c) #menu (d) .note

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