对于任何使用react-bootstrap并遇到此问题的人，以下是我所做的工作:

.btn:focus {
    /* the !important is really the key here, it overrides everything else */
    outline: none !important;
    box-shadow: none !important;
}

在添加!之前，事情并没有工作。

我很好奇为什么有人想要删除轮廓。就像许多人提到的，如果你删除大纲，就会有可访问性问题。使用屏幕阅读器等辅助技术的用户在访问网站/应用程序时需要知道重点在哪里。我知道按钮周围的蓝色会“搞砸”设计，但是，你可以用CSS改变颜色:

outline-color: your color hex here;

另一种编辑方法是在焦点上添加边框。

直接在HTML标签中(在您可能想要在设计的其他地方留下引导主题的场景中)..

尝试的例子..

<button style="border: transparent;">

<button style="border: 1px solid black;">

. .等。这取决于你想要的效果。

如果以上方法对你不起作用，试试下面的方法:

.btn:焦点{轮廓:无;框影:无;边框:2px实体 透明;}

正如user1933897所指出的，这可能是针对MacOS和Chrome的。

对于任何使用react-bootstrap并遇到此问题的人，以下是我所做的工作:

.btn:focus {
    /* the !important is really the key here, it overrides everything else */
    outline: none !important;
    box-shadow: none !important;
}

在添加!之前，事情并没有工作。

I found the same situation using a submit button in a form using a bootstrap (v4.4.1) class. The problem arose as I was building a single-page user interface using JavaScript to manipulate all the required changes to the DOM. The form data was submitted to the server via 'fetch' using a JSON string rather than a HTTP POST request. Note that usually the form's default behaviour is to reload the document, and normally this would refresh the button, however the form's default behaviour was prevented by using e.preventDefault() in the listener function for the form's submit event (it is a single-page UI so the document is never reloaded and traffic to the server is minimised to data only). Given the document was not reloaded the button appeared to stay depressed until the user clicked elsewhere in the window. This is what I had (with the problem):

<输入类型=“submit”类=“btn btn-primary”>

这是我用来解决按钮一直按下的问题:

<input type=“submit” class=“btn btn-primary” onmouseup=“this.blur（）”>