Why put the css file in the head

We know that in HTML files, we usually put css at the head and JS at the end. Why is this? Today I will give you a good analysis of the reasons for doing this.

This will load the css style first. When rendering the dom, it already knows its own style, so the rendering is successful.

If the css is placed at the bottom, then the dom needs to be rendered first, and then After loading the css, the previous dom will be re-rendered, which requires two renderings

I believe you have mastered the method after reading these cases. For more exciting content, please pay attention to other related articles on the PHP Chinese website!

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