我想在图像背景上叠加,以便更清楚地看到图像上方的白色文本。
为什么不会这个解决方案 http://codepen.io/anon/pen/aBJErm work ?
HTML:
<div id="myDiv" class="bg1 image-cover">
<p>H</p>
</div>
CSS:
#myDiv {
width: 300px;
height: 300px;
color: #fff;
position: relative;
font-size: 100px;
font-weight: bold;
}
.image-cover:before {
content:'\A';
position: absolute;
width:100%;
height:100%;
top:0;
left:0;
background:rgba(0,0,0,0.9);
opacity: 1;
}
.bg1 {
background-size: cover;
background: url('https://2zpt4dwruy922flhqyznip50-wpengine.netdna-ssl.com/wp-content/uploads/2014/12/lock-and-stock-photos.jpg');
}
while this one http://codepen.io/anon/pen/XNMZRp does:
HTML:
<div id="myDiv" class="bg1">
<div class="image-cover">
<p>H</p>
</div>
</div>
CSS:
...
.image-cover {
content:'\A';
position: absolute;
width:100%;
height:100%;
top:0;
left:0;
background:rgba(0,0,0,0.9);
opacity: 1;
}
...
我想我误解了方式:before
有效,但我不喜欢第二个解决方案,因为它比第一个解决方案多了一个 div。