当鼠标过来时，div 放大

我的网站： http://acamate.com/a/index.php

我想在鼠标过来时放大作业框。我用css做了它，但是当框放大时，底线将变为底线。

我想像 fiverr.com 一样。在 fiverr 中，当框放大时，底线不会影响，并且还显示用户名。我该怎么做？CSS、jQuery 或 Javascript。谢谢你的帮助

https://www.fiverr.com/categories/online-marketing/#layout=auto&page=1

我的代码：

风格.css

#box {margin-top:31px; padding:1px;margin-left:30px; height:234px;float:left;width:218px;background-color:#fff;box-shadow: 0 0 3px;
-webkit-transition-property: height; 
-webkit-transition-timing-function;
ease-in;
-webkit-transition-duration:0.1s;
-webkit-transition-delay:0.0s; 
}
#box img{width:218; height;147px;}
#box:hover {
    height: 254px;}

.PHP

 echo'<div id="box"><img src='.$categ2.' style=color:#555555>'.$categ1.'</a></div>';

好的，如果您在提供的网站上注意到，当您将鼠标悬停在项目上时，正在发生一些其他事情：

四四方方的项目本身不会增加其高度，而是具有固定的高度(悬停时相同(和溢出：隐藏应用于它
还有一个内部包装器(改变其高度(，里面有两个子div，一个是可见的，一个是隐藏的。
将鼠标悬停在盒装物品上时，内部包装纸将其高度更改为更大的高度，以显示隐藏在里面的div 子项
你悬停的那个下面的四四方方的项目被一些上边距推了一下，如果你有一个固定的网格大小，但不是在全宽网格上，你可以只通过 CSS 复制，通过一些第 n 个子规则，如果你有一个固定的网格大小，而不是在全宽网格上，不仅使用 CSS，你将需要一些 JS 来做到这一点

但是，如果您只希望将鼠标悬停在项目上时行保持不变，则可以：(还有更多解决方案，但首先想到的是这些解决方案(

解决方案 1
boxdiv 的内容包裹在另一个包装器中，并在悬停时像这样玩内部包装器的高度(请参阅演示(

*,
*:after,
*:before {
  box-sizing: border-box;
}
#main {
  padding: 20px;
}
.box {
  width: 218px;
  height: 257px;
  /*set the outer parent height to match the height of initial content + hidden content + some margin push*/
  overflow: hidden;
  float: left;
  margin-top: 0;
  margin-left: 30px;
  padding: 1px;
  transition: all .2s ease-in-out;
}
.inner-box-content {
  height: 230px;
  background-color: #fff;
  box-shadow: 0 0 3px;
  transition: all .2s ease-in-out;
}
.initial-content {
  height: 220px;
}
.hovered-content {
  opacity: 0;
  height: 30px;
  background: cyan;
  transition: all .2s ease-in-out;
}
.box:hover .inner-box-content {
  height: 250px;
  /*show the hidden div: add up the initial-content height + hovered-content height*/
}
.box:hover .hovered-content {
  opacity: 1;
}

<div id='main'>
  <div class='box'>
    <div class='inner-box-content'>
      <div class='initial-content'>
        Just your regular css box here
      </div>
      <div class='hovered-content'>
        A sneaky content over here!
      </div>
    </div>
  </div>
  <div class='box'>
    <div class='inner-box-content'>
      <div class='initial-content'>
        Just your regular css box here
      </div>
      <div class='hovered-content'>
        A sneaky content over here!
      </div>
    </div>
  </div>
  <div class='box'>
    <div class='inner-box-content'>
      <div class='initial-content'>
        Just your regular css box here
      </div>
      <div class='hovered-content'>
        A sneaky content over here!
      </div>
    </div>
  </div>
  <div class='box'>
    <div class='inner-box-content'>
      <div class='initial-content'>
        Just your regular css box here
      </div>
      <div class='hovered-content'>
        A sneaky content over here!
      </div>
    </div>
  </div>
  <div class='box'>
    <div class='inner-box-content'>
      <div class='initial-content'>
        Just your regular css box here
      </div>
      <div class='hovered-content'>
        A sneaky content over here!
      </div>
    </div>
  </div>
  <div class='box'>
    <div class='inner-box-content'>
      <div class='initial-content'>
        Just your regular css box here
      </div>
      <div class='hovered-content'>
        A sneaky content over here!
      </div>
    </div>
  </div>
  <div class='box'>
    <div class='inner-box-content'>
      <div class='initial-content'>
        Just your regular css box here
      </div>
      <div class='hovered-content'>
        A sneaky content over here!
      </div>
    </div>
  </div>
  <div class='box'>
    <div class='inner-box-content'>
      <div class='initial-content'>
        Just your regular css box here
      </div>
      <div class='hovered-content'>
        A sneaky content over here!
      </div>
    </div>
  </div>
  <div class='box'>
    <div class='inner-box-content'>
      <div class='initial-content'>
        Just your regular css box here
      </div>
      <div class='hovered-content'>
        A sneaky content over here!
      </div>
    </div>
  </div>
  <div class='box'>
    <div class='inner-box-content'>
      <div class='initial-content'>
        Just your regular css box here
      </div>
      <div class='hovered-content'>
        A sneaky content over here!
      </div>
    </div>
  </div>
  <div class='box'>
    <div class='inner-box-content'>
      <div class='initial-content'>
        Just your regular css box here
      </div>
      <div class='hovered-content'>
        A sneaky content over here!
      </div>
    </div>
  </div>
</div>

或

解决方案 2
您可以使用负的下边距值(隐藏内容的高度(进行拉动，当悬停时，像这样(见演示(

.box {
  margin-top: 31px;
  padding: 1px;
  margin-left: 30px;
  height: 234px;
  float: left;
  width: 218px;
  background-color: #fff;
  box-shadow: 0 0 3px;
  /* -webkit-transition-property: height; */
  /* -webkit-transition-duration: 0.1s; */
  /* -webkit-transition-delay: 0.0s; */
  transition: all .2s ease-in-out;
}
.box:hover {
  height: 254px;
  /*add increased height difference by 20px*/
  margin-bottom: -20px;
  /*a negative value meaning the height of your inner content or some increased height difference*/
}

<div id='main'>
  <div class='box'>
    A box
  </div>
  <div class='box'>
    A box
  </div>
  <div class='box'>
    A box
  </div>
  <div class='box'>
    A box
  </div>
  <div class='box'>
    A box
  </div>
  <div class='box'>
    A box
  </div>
  <div class='box'>
    A box
  </div>
  <div class='box'>
    A box
  </div>
  <div class='box'>
    A box
  </div>
  <div class='box'>
    A box
  </div>
  <div class='box'>
    A box
  </div>
  <div class='box'>
    A box
  </div>
  <div class='box'>
    A box
  </div>
</div>

希望这有帮助！

虽然这不是完整的答案，但你可能想看看它：http://jsfiddle.net/7qoxh0sw/

.html：

<div class="box">
    <h1>1</h1>
    <div>"user details"</div>
</div>
<div class="box">
    <h1>2</h1>
    <div>"user details"</div>
</div>
<div class="box">
    <h1>3</h1>
    <div>"user details"</div>
</div>
<div class="box">
    <h1>4</h1>
    <div>"user details"</div>
</div>
<div class="box">
    <h1>5</h1>
    <div>"user details"</div>
</div>
<div class="box">
    <h1>6</h1>
    <div>"user details"</div>
</div>
<div class="box">
    <h1>7</h1>
    <div>"user details"</div>
</div>

.css

.box{
    /*important css*/
    height: 150px;
    width: 100px;
    display: inline-block;
    transition: margin 1s;
    position: relative;
    margin: 10px;
    /*useless css - used only for visuals*/
    background: #aaa;
    color: white;
    text-align: center;
}
.box div{
    /*important css*/
    display: block;
    height: 0px;
    position: absolute;
    top: 100%;
    transition: height 1s;
    width: 100%;
    /*useless css - used only for visuals*/
    background: red;
    text-align: center;
}
.box:hover{
    /*60px because 50px(from next css rule) + 10px(from margin in `.box` rules)*/
    margin-bottom: 60px;
}
.box:hover div{
    height: 50px;
}

这应该让您对实现所需效果的 css 有一个基本的了解。您需要做的就是将html更改为类似的格式，其中用户详细信息是div class="box"的子div，具有绝对位置。休息只是悬停在盒子div 上的 css 效果。

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