<div class="box">
  <img src="https://gazon.media/userfls/news/large/1361_darya-strizhak.jpg" alt="">
</div>

.box {
  height: 300px;
  width: 400px;
  border: 1px solid red;
  overflow: hidden;
}
.box:hover img {
  transform: scale(1.2);
}

img {
  width: 100%;
  height: auto;
  transition: transform .3s;
}