为什么不同的浏览器需要自己的边框半径样式？
我想知道这个问题有一段时间了。为什么不同的浏览器只支持 CSS border-radius 属性，如果它带有自己的特殊前缀。我不明白为什么我必须写这个：
/* For Firefox and other Gecko browsers */
-moz-border-radius: 5px;
/* For Chrome/Safari and other Webkit browsers */
-webkit-border-radius: 5px;
/* For others */
border-radius: 5px;
当我可以写这个时：
border-radius: 5px;
是否有理由要求我写前缀？为什么浏览器不都只支持 border-radius 属性？这对我来说毫无意义，为什么浏览器开发人员决定拥有不同的属性，这只会让我的生活变得更加困难。其背后是否有技术或法律原因？
I've wondered this for a while. Why do different browsers only support the CSS border-radius property if it is prefixed with their own special prefix. I don't understand why I have to write this:
/* For Firefox and other Gecko browsers */
-moz-border-radius: 5px;
/* For Chrome/Safari and other Webkit browsers */
-webkit-border-radius: 5px;
/* For others */
border-radius: 5px;
When I could just write this:
border-radius: 5px;
Is there a reason that I'm required to write the prefixes? Why don't the browsers all just support the border-radius property? It just doesn't make sense to me, why browser developers decided to all have different properties that just make my life harder. Is there a technical or legal reason behind it?
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这个问题的答案基本上与此处给出的相同：
为什么CSS3中有-moz-XXX和-webkit-XXX？
The answer to this question is essentially the same given here:
Why there is -moz-XXX and -webkit-XXX in the CSS3?
基本上，生活并不完美。理想情况下，是的，它应该标准化。对于开发浏览器的各种大公司/团体来说，这是一个老问题。 W3C试图制定标准，但最终你无法强迫任何人。
尝试在这个非常相关的 SO.programmers 页面阅读更多内容 - https://softwareengineering.stackexchange.com/questions/103048/why-is-it-unrealistic-to-expect-all-browsers-to-support-the-same-standards 。有关浏览器/兼容性的更多信息此处，
Basically, life isn't perfect. Ideally yes, it should be standardized. It's an old issue dealing with the various large companies/groups that develop browsers. W3C tries to make standards, but in the end you can't force anyone.
Try reading more at this very relevant SO.programmers page - https://softwareengineering.stackexchange.com/questions/103048/why-is-it-unrealistic-to-expect-all-browsers-to-support-the-same-standards . And more regarding browsers/compatibility here,
最终它们都将支持标准的
border-radius。据我了解，当事情悬而未决时，或者出于类似的原因，他们就会这样做。（另外，不需要
-moz-border-radius，普通的跨浏览器现在已经被Gecko支持了。我相信WebKit也是一样的，但我懒得检查了。）Eventually they will all support the standard
border-radius. I'm given to understand they do that when things are up in the air standards-wise, or for similar reasons.(also, no need for
-moz-border-radius, the normal cross-browser is now supported by Gecko. I believe it's the same for WebKit too, but I'm too lazy to check.)