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Editor to share with you how to set the value of css margin, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

H2 {margin: 0.25em 1em 0.5em;} / * equivalent to 0.25em 1em 0.5em 1em * / h3 {margin: 0.5em 1em;} / * equivalent to 0.5em 1em 0.5em 1em * / p {margin: 1px;} / * equivalent to 1px 1px 1px 1px * /

There is a small flaw in this kind of method, and you are bound to encounter this title in the end. Suppose you want to set the upper margin and left margin of the p element to 20 pixels, and the bottom margin and right margin to 30 pixels. In such an environment, it is necessary to write:

P {margin: 20px 30px 30px 20px;}

How to get the consequences you want. Unfortunately, in such cases, there is no way to reduce the number of values required.

Let's look at another example. If you want all the outer margins except the left margin to be auto (left margin is 20px):

P {margin: auto auto auto 20px;}

In the same way, this ability gets the effect you want. The problem with the title is that typing these auto is a bit convenient. If you only want to control the outer margin on one side of the element, use the one-sided outer margin attribute.

The above is all the content of the article "how to set the value of margin by css". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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