css - 占位符文本仅在 Internet Explorer 中可见

Question

我有一个地址表单的占位符，用于向访问者举例说明如何格式化他们的地址。占位符文本在 IE 中可见，但在其他浏览器(chrome、firefox、safari)中它是透明的。

如何修复它以便在所有浏览器中显示？

 .form-control {
  display: block;
  width: 100%;
  height: 34px;
  padding: 6px 12px;
  font-size: 14px;
  line-height: 1.42857143;
  color: #555;
  background-color: #fff;
  background-image: none;
  border: 1px solid #ccc;
  border-radius: 4px;
  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
          box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
  -webkit-transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;
          transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;
}
.form-control:focus {
  border-color: #66afe9;
  outline: 0;
  -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, .6);
          box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, .6);
}
.form-control::-moz-placeholder {
  color: #999;
  opacity: 1;
}
.form-control:-ms-input-placeholder {
  color: #999;
}
.form-control::-webkit-input-placeholder {
  color: #999;
}
}
.form-control:-moz-placeholder {
  color: #c0392b;
}
}
.form-control::-moz-placeholder {
  color: #c0392b;
}

<div class="form-group">
    <label>Recipients Address</label>
    <textarea class="form-control" id="message" name="message" placeholder="Enter the address in the same format as you would write it on a envelope.

EXAMPLE:
Thomas Nolan Kaszas II
5322 Otter Lane
Middleberge FL 32068" rows="8"></textarea>
</div>

Answer 1

显然你有半透明的文本区域，它与默认的灰色占位符颜色相结合，使文本完全不可读。您可以使用以下规则集更改占位符的文本颜色

::-webkit-input-placeholder {color:#c0392b;}
::-moz-placeholder          {color:#c0392b;}/* Firefox 19+ */
:-moz-placeholder           {color:#c0392b;}/* Firefox 18- */
:-ms-input-placeholder      {color:#c0392b;}