Coding for Beginners: CSS Basics #9— Understanding the Difference Between Padding and Margin
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We have already touched upon padding and margin. But we will discuss it more in depth in this video.
Padding specifies the space between the content of an element and its border. While margin specifies the gap between the border and the border of another element. Increasing margin widens the gap between elements.
The value can be in pixels or percentages. The values are written out in a format where you specify the top margin or padding first and then work clockwise. So top, right, bottom, and left.
For our examples we have added borders around our elements so it is easier to see the margin and padding being changed.
p {
margin: 10px 5px 10px 5px;
padding: 10px 5px 10px 5px;
}
Now you can see that there is space between the border and the content and the border and the adjacent element.
If the top and the bottom margin or padding are the same and the left and the right margin or padding are the same, you can shorten the declaration so the first is the top & bottom and the second is the right & left.
p {
padding: 10px 5px; margin: 10px 5px;}
Even though the code has changed, there is no change visually because the browser still shows 10 pixels of margin and padding at the top and bottom and 5 pixels of margin and padding to the left and right.
This shows the code we have reviewed again. We have HTML at the top and the two options of CSS that we reviewed below.
Neither padding nor margin is inherited by child elements.
If you specify a width or height for a box, then the borders, margin, and padding are added to its width and height.
We use the margin to center an element as well. By setting the left-margin and the right-margin to "auto", a box can be centered on the page or within its containing element.
One must specify the width of the box and the auto value will make the browser put an equal gap on each side of the box.
p {
width: 800px;
padding: 50px;
margin: 10px auto;
}
In our final code example, we see that we have limited the width of the box to 800 pixels. The browser will automatically calculate the space needed on each side to center the content.
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