<div class="main">
  <div class="inside"></div>
</div>

.main {
  width: 200px;
  height: 200px;
  margin: 0 auto;
  background: #ff5454;
  cursor: pointer;
  transition: 1.5s all ease;
  position: relative;
  border: 5px solid #ff5454;
}
.inside {
  width: 100px;
  height: 100px;
  background: #fff;
  position: absolute;
  top: 50px;
  left: 50px;
  transition: 1.5s all ease;
}
.main:hover {
  background: #fff;
}
.main:hover .inside {
  background: #ff5454;
}