带缩放的 CSS 响应式悬停图像标题

Question

我为图像网格编写了此代码，该代码具有响应性并放大图像并显示其标题。不幸的是，我不知道如何使 Caption 响应。带有 Blur 类的深色叠加层应与图像大小相同，因为文本应位于中间。但是，一旦我更改 position:absolute 和/或将宽度和高度更改为 auto 或 100%，元素就会消失。

我有一段时间没有编码了，我错过了什么明显的东西吗？知道如何解决这个问题吗？

Example here

<div class="wrapper">
<div class="columns"> 
<div class="column">
    <img src="http://lorempixel.com/400/200/">
    <div class="caption">
        <div class="blur"></div>
        <div class="caption-text">
            <h5>Info 1</h5>
        </div>
    </div>
</div>
<div class="column">
    <img src="http://lorempixel.com/400/200/">
</div>  
<div class="column">
    <img src="http://lorempixel.com/400/200/">
 </div>
<div class="column">
    <img src="http://lorempixel.com/400/200/">
</div>
<div class="column">
    <img src="http://lorempixel.com/400/200/">
</div>
</div>

.column{
    float: left;
    padding: 0px;
    position: relative;
    overflow: hidden;
}

.column:hover .caption{
    opacity: 1;
}

.column:hover img{
opacity: 1;
transform: rotate(3deg) scale(1.15,1.15);
-webkit-transform: rotate(3deg) scale(1.15,1.15);
-moz-transform: rotate(3deg) scale(1.15,1.15);
-ms-transform: rotate(3deg) scale(1.15,1.15);
-o-transform: rotate(3deg) scale(1.15,1.15);

-moz-transform-origin: center;
-webkit-transform-origin: center;
transform-origin: center;
}

.column img{
    margin: 0px;
    padding: 0px;
    float: left;
    z-index: 0;
    width:100%;
}

.column .caption{
    cursor: pointer;
    position: absolute;
    opacity: 0;
    -webkit-transition:all 0.45s ease-in-out;
    -moz-transition:all 0.45s ease-in-out;
    -o-transition:all 0.45s ease-in-out;
    -ms-transition:all 0.45s ease-in-out;
    transition:all 0.45s ease-in-out;
}

.column img{
    -webkit-transition:all 0.25s ease-in-out;
    -moz-transition:all 0.25s ease-in-out;
    -o-transition:all 0.25s ease-in-out;
    -ms-transition:all 0.25s ease-in-out;
    transition:all 0.25s ease-in-out;
}

.column .blur{
    background-color: rgba(0,0,0,0.65);
    height: 400px;
    width: 300px;
    z-index: 5;
    position: absolute;
    top:0;
    left:0;
}

.column .caption-text h1{
    text-transform: uppercase;
    font-size: 24px;
}

.column .caption-text{
    z-index: 10;
    color: #fff;
    position: absolute;
    width: 400px;
    height: 300px;
    text-align: center;
    top:100px;
}

/* Grid */
* { 
box-sizing: border-box; 
-moz-box-sizing: border-box;
-webkit-box-sizing: border-box;
}

.wrapper{
max-width: 1200px;
margin:0 auto;
overflow: hidden;
}    
.columns {
display: flex;
flex-flow: row wrap;
justify-content: center;
margin:-1.5%;

}

.column {
position: relative;
width:50%;

flex: 32%;
overflow:hidden;
margin: 5px;
&:first-child { margin-left: 0; }
&:last-child { margin-right: 0; }
}


@media screen and (max-width: 980px) {
.columns .column {

    flex-basis: 40%;
    &:nth-last-child(2) {
        margin-right: 0;
    }
    &:last-child {
        flex-basis: 100%;
        margin: 0;
    }
 }
}

@media screen and (max-width: 680px) {
.columns .column {
    flex-basis: 100%;
 }
}

Answer 1

您可以使用flexbox 来解决它在您的 CSS 中更改/添加这些属性：

.column .blur {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    left: 0;
    top: 0;  
}
.column .caption {
    width: 100%;
    height: 100%;
}
.column .caption-text {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
}

由于.column .blur 和.column .caption-text 有相似之处，您可以为两者创建一个class。

最终结果在这里：https://jsfiddle.net/b42ehq8o

希望对你有帮助。

Answer 2

为了实现您的结果，进行了许多更改，如codepen 中所述

为了垂直居中，我使用了flex

.column .caption-text{
    display: flex;
    align-items: center;
    justify-content: center;
...

在你的h5 文字上

.column .caption-text h5{
    max-width:50%
    ...
 }

你的 div(s) 是

<div class="caption">
<div class="blur"></div>
<div class="caption-text">

它们的高度和宽度应该是100%

like.column .blur{
    background-color: rgba(0,0,0,0.65);
    height: 100%;
    width: 100%;
    z-index: 5;
    position: absolute;
    top:0;
    left:0;
}
.caption{
    width:100%;
    height:100%;
}
.column .caption-text h5{
    text-transform: uppercase;
    font-size: 24px;
    z-index:99;
    max-width:50%
}

.column .caption-text{
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    color: #fff;
    width: 100%;
    height: 100%;
    text-align: center;
    top:100px;
}