Question

我有以下代码：

<div class="row front-page-img">
  <img class="img-responsive" src="http://www.echomountainresort.com/wp-content/uploads/2014/10/echo-mountain-concert_banner_bg.jpg" style="box-shadow: rgba(0,0,0,.2) 3px 5px 5px;">
  <div class="front-page-container-search">
    <h3>This is the text that I wish could be solid white, but instead it is transparent</h3>
    <form>
      <div class="input-group">
        <input type="text" class="form-control">
          <span class="input-group-btn">
        <button class="btn btn-default" type="submit">
          <span class="glyphicon glyphicon-search"></span>
        </button>
        </span>
      </div>
    </form>
  </div>
</div>


.front-page-img {
    margin-right: 0px;
}

.front-page-container-search{
    position:absolute;
    left: 50px;
    right:50px;
    width: 200px;
    color: white;
    text-align: center;
    top: 75px;
    background-color: rgba(0, 0, 0, 0.6);
    border: 1px solid black;
    opacity: 0.7;
    margin: 0 auto;
}

正如您在我的jsFiddle中看到的here我的文字不是纯白色，我的输入是透明的。理想情况下，我希望有纯白色文本和可靠的输入。我试图使用这个较旧的question中接受的答案并尝试使用z-index，但没有运气。任何帮助表示赞赏。

Answer 1

将不透明度设置为1并正确包装div。这是小提琴。 https://jsfiddle.net/n6qzsttL/

<div class="row front-page-img ng-scope">
<img class="img-responsive" src="http://www.echomountainresort.com/wp-content/uploads/2014/10/echo-mountain-concert_banner_bg.jpg" style="box-shadow: rgba(0,0,0,.2) 3px 5px 5px;">
<div class="front-page-container-search">
     <h3>This is the text that I wish could be solid white, but instead it is transparent</h3>

</div>
<form>
    <div class="input-group">
        <input type="text" class="form-control"> <span class="input-group-btn">
    <button class="btn btn-default" type="submit">
      <span class="glyphicon glyphicon-search"></span>

        </button>
        </span>
    </div>
</form>

和CSS

.front-page-img {
margin-right: 0px;
}
.front-page-container-search {
    position:absolute;
    left: 50px;
    right:50px;
width: 200px;
color: white;
text-align: center;
top: 75px;
background-color: rgba(0, 0, 0, 0.6);
border: 1px solid black;
opacity: 1;
margin: 0 auto;
}

Answer 2

您的z-index没有任何问题。您将.front-page-container-search的操作设置为0.7。这就像它在锡上说的那样;它使用0.7的不透明度渲染元素 - 包括其中的所有内容。

如果您不希望不透明度通过子项传播，请不要在父项上设置它。删除此属性，您的文本和输入将为纯白色。

Answer 3

目前您使用opacity .front-page-container-search作为0.7. 1请使用0.7代替.front-page-container-search{ /* Theoretically for IE 8 & 9 (more valid) */ /* ...but not required as filter works too */ /* should come BEFORE filter */ -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=100)"; // IE8 /* This works in IE 8 & 9 too */ /* ... but also 5, 6, 7 */ filter: alpha(opacity=100); // IE 5-7 /* Modern Browsers */ opacity:1; }。

var win = window.open(URL, windowName, 'resizable=no');
win.resizeTo(*yourWidth*, *yourHeight*);

在透明透明背景的纯文本

3 个答案: