<div class="flex">
  <div class="malformation"></div>
</div>
.flex {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.malformation {
  width: 200px;
  height: 100px;
  display: block;
  background-color: #1e90ff;
  border: 1px solid #1e90ff;
  border-radius: 60% 25%  / 40% 90%;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.