Junction

<div></div>
<style>
  body {
    background: #191919;
  }

  div,
  div::after {
    border-radius: 20px;
    position: absolute;
    box-shadow: 0 200px #fe5f55;
  }

  div {
    width: 40px;
    height: 160px;
    background: #fe5f55;
    top: -30px;
    left: 50%;
    translate: -50%;
  }

  div::after {
    content: '';
    width: 200px;
    height: 40px;
    top: 180px;
    left: -200px;
    translate: 0 -50%;
    background: #a64942;
    box-shadow: 240px 0 #a64942;
  }
</style>