在Internet Explorer中无法正确显示Bootstrap模态样式的位置固定关闭按钮

Question

我正在使用 Bootstrap 3.0.2 版本的网站上工作。我已经设置了一个模态关闭按钮，在除了Internet Explorer之外的所有浏览器中都能正常显示（我已经检查了11）。基本上，为了使它看起来像这样，

我使用过这个CSS：

.modal-header .close {
    position: fixed;
    top: -10px;
    right: -10px;
    width: 23px;
    height: 23px;
    opacity: 1;
    z-index: 10;
}

使用position: fixed;代替position: absolute;的原因是有线的。在使用position: absolute;时，由于顶部和右侧的负值，它无法显示它的一半部分。截图：

这就是为什么，我使用的位置：固定;在每个浏览器都能很好地工作。但是，Internet Explorer正在以这种方式显示这个十字按钮：

如何为Internet Explorer修复此问题？

注意：由于某些原因，我无法升级引导程序版本：/

Fiddle Work

Answer 1

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.modal {
  overflow: inherit;
  overflow-y: inherit;
  text-align: center;
  padding: 0;
}

.modal:before {
  content: '';
  display: inline-block;
  height: 100%;
  vertical-align: middle;
  margin-right: -4px;
}

.modal-dialog {
  max-width: 500px;
  padding: 0;
  display: inline-block;
  text-align: left;
  vertical-align: middle;
}

.modal-content {

  border: 0;
  border-radius: 0;

}

.modal-header {
  border: 0;
  padding 0;
  position: relative;
}

.modal-header .close {
  margin: 0;
  position: absolute;
  top: -10px;
  right: -10px;
  width: 23px;
  height: 23px;
  border-radius: 23px;
  background-color: #00aeef;
  color: #ffe300;
  font-size: 9px;
  opacity: 1;
  z-index: 10;
}

.modal-content p {
  padding: 0 20px;
}

.modal-body {
  padding: 0 0 10px 0;
    height: 450px;
    overflow: auto;
}

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<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">

<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap-theme.min.css" integrity="sha384-fLW2N01lMqjakBkx3l/M9EahuwpSfeNvV63J5ezn3uZzapT0u7EYsXMjQV+0En5r" crossorigin="anonymous">

<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS" crossorigin="anonymous"></script>
<div class="container">
  <div class="row">
    <div class="col-xs-12">
      <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#myModal">Launch demo modal</button>
    </div>
  </div>
</div>

<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h4 class="modal-title" id="myModalLabel">Modal title</h4>
      </div>
      <div class="modal-body">
        <p>
          Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
          survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
          publishing software like Aldus PageMaker including versions of Lorem Ipsum.
        </p>

        <p>
          Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
          survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
          publishing software like Aldus PageMaker including versions of Lorem Ipsum.
        </p>

        <p>
          Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
          survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
          publishing software like Aldus PageMaker including versions of Lorem Ipsum.
        </p>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
        <button type="button" class="btn btn-primary">Save changes</button>
      </div>
    </div>
  </div>
</div>

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