Why do we need to initialize CSS styles?
Well, we need to initialize CSS styles mainly because of browser compatibility issues. You know, different browsers have different default values for some HTML tags. If we don't initialize the CSS, the same page might look different across browsers. So what we usually do is remove default styles like margins and padding from tags, and set up default font sizes and font families. This way, we can make sure our pages look consistent no matter which browser people are using.
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为什么要初始化CSS样式？因为浏览器的兼容性问题，在不同浏览器中有些标签的默认值是不同的。如果没有对 CSS 进行初始化，那么页面在不同的浏览器之间显示可能会有差异。一般常用的初始化样式操作是去掉标签的默认样式，比如 margin 和 padding，设置默认的字体大小和字体等，以便在不同浏览器中显示效果一致。