.portrait-video{
  position: relative;
  width: 50%;
  margin: 0 auto;
  padding-top: 120%;
  max-height: 420px;
  overflow: hidden;
}

.portrait-video video{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}