An element’s padding is the space between its content and its border.
The padding property is a shorthand property for:
padding-top
padding-right
padding-bottom
padding-left
Note: Padding creates extra space within an element, while margin creates extra space around an element.
This property can have from one to four values.
If the padding property has four values:
padding:10px 5px 15px 20px;
top padding is 10px
right padding is 5px
bottom padding is 15px
left padding is 20px
If the padding property has three values:
padding:10px 5px 15px;
top padding is 10px
right and left padding are 5px
bottom padding is 15px
If the padding property has two values:
padding:10px 5px;
top and bottom padding are 10px
right and left padding are 5px
If the padding property has one value:
padding:10px;
all four paddings are 10px