Splash

<div></div>
<style>
  body {
    background: #6592cf;
  }
  div {
    width: 50px;
    height: 210px;
    background: #060f55;
    border-radius: 25px 25px 0 0;
    rotate: -45deg;
    translate: 300px 120px;
    box-shadow:
      60px 65px 0 -10px #060f55,
      -60px 65px 0 -10px #060f55;
  }
</style>