Example:
p {padding: 15px; border: 1px solid black; }
h5{padding: 0px; border: 1px solid red;}

This is a paragraph that has a padding of 15 pixels on every side: top, right, bottom, and left.

This header has no padding, which places the text right against the border!
There are several ways to go about defining the CSS Padding attribute. We will show you every possible way and let you know which ways are the best.

CSS Padding: 1 Value
As you saw in the example above, padding can be uniform inside an element. Specifying one value will create a uniform padding on all sides: top, right, bottom, left. In addition to using exact values, you may also define the padding with the use of percentages.

Example:
p {padding: 2%; border: 1px solid black; }
h5{padding: 0px; border: 1px solid red;}

This is a paragraph that has a padding of 5 pixels on every side: left, top, right, and bottom.
This header has no padding. It is only spaced away from the paragraph because the paragraph has a padding of 5 pixels!

CSS Padding: padding-(direction):
Each HTML element actually has 4 different paddings: top, right, bottom, and left. It is possible to define these individual paddings simply by adding a direction suffix to the padding attribute. Example form: padding-(direction). Defining only one direction will leave the other 3 default paddings untouched.

Example:
p { padding-left: 5px; border: 1px solid black; }
h5{
padding-top: 0px;
padding-right: 2px;
padding-bottom: 13px;
padding-left: 21px;
border: 1px solid red;
}

This paragraph had one padding specified(left), using directional declaration.
This header had each padding specified separately, using directional declaration.

CSS Padding: 2 & 4 Values
Four padding values can be declared at once by either specifying two or four values. When only using two values, the first will define the padding on the top and bottom, while the second will define the padding on the left and right.
When using the four value padding specification, the corresponding directions are: top, right, bottom, left. To help you remember what the order is, just remember that it starts at the top and then moves clockwise until it reaches the left. The examples below shows partial (2) and complete (4) padding usage.

Example:
p {
padding: 5px 15px;
border: 1px solid black;
}
h5{
padding: 0px 5px 10px 3px;
border: 1px solid red;
}

Example:
This paragraph has a top and bottom padding of 5 pixels and a right and left padding of 15 pixels.
This header has a top padding of 0 pixels, a right padding of 5 pixels, a bottom padding of 10 pixels, and a left padding of 3 pixels.