我想在图像上创建linear-gradient
的效果:
我尝试了这段代码:http://codepen.io/anon/pen/dNZoeJ
html,
body {
width: 100%;
height: 100%;
margin: 0;
}
.bg-img {
width: 100%;
height: 100%;
background: url('http://unsplash.it/1200x800') center center no-repeat;
background-size: cover;
}
.bg-img:before {
content: '';
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
background-image: linear-gradient(to bottom right, #002f4b, #dc4225);
opacity: .6;
}

<div class="bg-img"></div>
&#13;
但是我的图片不是背景内容,因此无法正常工作。
<% review.forEach(function(review) { %>
<div class="col-md-4 col-sm-6">
<div class="thumbnail">
<div class="img">
<a href="/review/<%= review._id %>"><img src="<%= review.image %>"></a>
</div>
</div>
<div class="caption">
<a href="/review/<%= review._id %>"><h2><%= review.title %></h2></a>
</div>
<span><%= review.created.toDateString(); %></span>
<div class="relative">
<p><%- review.body.substring(0,250); %></p>
<div class="absolute"></div>
</div>
</div>
<% }) %>
有没有办法通过内联<img>
标记达到预期的效果?
答案 0 :(得分:3)
您可能正在为内嵌图片寻找objcet-fit
。它与background-size
的工作方式类似。注意,它在IE和Edge上不起作用。
img {
object-fit: cover;
width: 100%;
height: 100%;
}
html,
body {
height: 100%;
margin: 0;
}
.bg-img {
height: 100%;
position: relative;
}
.bg-img img {
object-fit: cover;
width: 100%;
height: 100%;
display: block;
}
.bg-img:before {
content: '';
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
background-image: linear-gradient(to bottom right, #002f4b, #dc4225);
opacity: .6;
}
<div class="bg-img">
<img src="http://unsplash.it/1200x800">
</div>
除此之外,如果容器已知宽度和高度,您可以使用内联style="background: ..."
或<style>...</style>
。
修改强>
我使用<img>
标签制作了一个简单的演示,如您发布的图片,如上所述,如果您需要支持更多浏览器,请切换到背景图片。
.hero {
display: flex;
height: 200px;
}
.hero div {
position: relative;
}
.hero img {
object-fit: cover;
width: 100%;
height: 100%;
display: block;
}
.hero h2 {
position: absolute;
bottom: 0;
left: 0;
color: white;
font-weight: normal;
margin: 10px;
}
.a, .b {
flex: 1;
}
.b {
display: flex;
flex-direction: column;
height: 100%;
}
.b1, .b2 {
height: 50%;
}
.a:before,
.b1:before,
.b2:before {
content: '';
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
background-image: linear-gradient(to bottom right, #002f4b, #dc4225);
opacity: .6;
}
<div class="hero">
<div class="a">
<img src="http://unsplash.it/600x300?random">
<h2>Title</h2>
</div>
<div class="b">
<div class="b1">
<img src="http://unsplash.it/600x400?random">
<h2>Title</h2>
</div>
<div class="b2">
<img src="http://unsplash.it/600x500?random">
<h2>Title</h2>
</div>
</div>
</div>
<强> jsFiddle 强>
答案 1 :(得分:1)
CSS可以胜任。
伪想法对我来说似乎很好,你应该使用pointer-events
来点击它。
您可以使用rgba()颜色代替不透明度。
您可以使用display:flex
来帮助自己绘制列或float
...
您可以使用nth-child()
等选择器来选择第一个和第一个.thumbnails
(为线性渐变的大小和应用不同的方向)。
您可以在伪&#39; sparent上设置线性背景,当图像加载或丢失时,它将被看到并增加。
您可以添加插入阴影以查看图像上的某些边缘。
...
例如
html,
body {
width: 100%;
height: 100%;
}
.thumbnail:before {
content: '';
top: 0;
left: 0;
position: absolute;
width: 100%;
height: 100%;
background: inherit;
box-shadow: inset 0 0 4px 1px rgba(255, 255, 255, 0.25);
pointer-events: none;
/* allows to click under it */
}
.box {
display: flex;
flex-flow: column wrap;
height: 200px;
width: 600px;
margin: auto;
overflow: hidden;
box-shadow:0 0 0 1px rgba(0, 125, 255, 1);
}
.box > .thumbnail {
flex: 1;
min-height:100px;
max-height: 100px;
width: 200px;
max-width: 200px;
position: relative;
background: linear-gradient(to bottom right, rgba(0, 125, 255, 0.5), rgba(255, 125, 0, 0.5));
}
.box > .thumbnail:first-of-type {
min-height:200px;
max-height: 200px;
max-width: 200px;
}
.box > .thumbnail:nth-child(odd) {
background: linear-gradient(to top left, rgba(0, 125, 255, 0.5), rgba(255, 125, 0, 0.5));
}
.img,
.img a {
display: block;
height: 100%;
width: 100%;
}
.img a img {
width: 100%;
}
/* demo purpose*/
body {
display: flex;
margin: 0;
}
&#13;
<div class="box">
<div class="thumbnail">
<div class="img">
<a href="/review/<%= review._id %>">
<img src="http://unsplash.it/1200x800" />
</a>
</div>
</div>
<div class="thumbnail">
<div class="img">
<a href="/review/<%= review._id %>">
<img src="http://unsplash.it/1200x802?random" />
</a>
</div>
</div>
<div class="thumbnail">
<div class="img">
<a href="/review/<%= review._id %>">
<img src="http://unsplash.it/1200x801?random" />
</a>
</div>
</div>
<div class="thumbnail">
<div class="img">
<a href="/review/<%= review._id %>">
<img src="http://unsplash.it/1200x800?random" />
</a>
</div>
</div>
<div class="thumbnail">
<div class="img">
<a href="/review/<%= review._id %>">
<img src="http://unsplash.it/1201x799?random" />
</a>
</div>
</div>
</div>
&#13;