makinggood

<div class="w3">
  <div class="inner active"></div>
</div>

<div class="w3">
  <div class="inner"></div>
</div>

<div class="w3">
  <div class="inner"></div>
</div>

.w3 {
  width:28%;
  margin:1%;
  min-height:150px;
  background:#999;
  float:left;
  position:relative;
}

.inner {
  position:absolute;
  min-height:100%;
  min-width:100%;
  background:#333;
}

.inner:hover, .active {
  top: -5px;
  left: -5px;
}