.btn:focus:active {
  outline: none;
}

这将在点击时删除轮廓，但在点击时保持焦点(对于a11y)

风格

.not-focusable:focus {
    outline: none;
    box-shadow: none;
}

使用

<button class="btn btn-primary not-focusable">My Button</button>

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（）”>

另一种可能的解决方案是在用户单击按钮时使用Javascript侦听器添加类，然后使用另一个侦听器集中删除该类。这保持了可访问性(可见的标签)，同时也防止了Chrome的奇怪行为，认为一个按钮在点击时集中。

JS:

$('button').click(function(){
    $(this).addClass('clicked');
});
$('button').focus(function(){
    $(this).removeClass('clicked');
});

CSS:

button:focus {
    outline: 1px dotted #000;
}
button.clicked {
    outline: none;
}

完整的例子: https://jsfiddle.net/4bbb37fh/

这里有两种可能的解决方案。

1.） 按钮类型=“按钮” 类名称=“btn-cart”onClick{（event）=>this.blur（event）}

2.)按钮类型="按钮" className="btn-cart" onclick={this.blur}

这两种解决方案都将删除按钮周围突出显示的部分 即-> blur()有自己的规范，它删除突出显示的部分周围。

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。