Emmanuel's answers to the Bootstrap Exercises

20. The table now have some borderlines and the elements of the table are now well distributed (separation).
22. This statement adds margins (separations between the web-page window border and the text).
24. Selector:

    .table th

25. This selector refers to the th elements (table headers) within an element whose class attribute contains the value "table".
26. The following property:

    font-weight:bold;

28. The background color of some rows changed: they are now gray. They are interspersed: one greyed, one not greyed.
29. Selector:

    .table-striped tbody tr:nth-type(odd)

    The shaded rows (the odd ones) have the aforementioned selector and the background-color property, the others not.
30. The table header now has an orange background.
32. Property:

    text-transform: uppercase;

34. Properties specified by Bootstrap:
    • font-size
    • margin-bottom
    • font-weight
    • line-weight
    • margin-top
    • box-sizing
    Properties specified by Chrome (the user agent):
    • display
    • margin-block-start
    • margin-block-end
    • margin-inline-start
    • margin-inline-end

37. Property name 1: font-size 
    Property name 2: font-weight

39. The image is now right-aligned and it is sorrounded by text.
40. Rule:

    .float-right{
    margin-left: 20px;
    }

42. Properties:
    • border
    • border-radius
    • padding
45. It is inherited from body.
46. The text is now smaller and italized.
49. The text is bigger.
56. The character is the "em dash", which is a long dash encoded as U+2014.