What is the difference between border: 0 and border: none? bordernone

What is the difference between border: 0 and border: none? bordernone

What is the difference between border: 0 and border: none:
If you set the border of an object to border: 0 and border: none, the border can be canceled. The code example is as follows:

<! DOCTYPE html>  
The code above shows that by setting the border to 0 or none, you can cancel the border. The two are the same in appearance, but they are still quite different. Border: 0: You can set the border width to zero. Although you cannot see it visually, the browser will still render it. border: none directly does not have a border and the browser will not render it. Therefore, the effect of setting to none is slightly higher. Of course, this gap is negligible.
 
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