* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.player {
  position: relative;
  width: 350px;
  background: #f1f2f3f4;
  box-shadow: 0 50px 80px rgba(0, 0, 0, 0.25);
}

.player .imgBx {
  position: relative;
  width: 100%;
  height: 350px;
}

.player .imgBx img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.player audio {
  width: 100%;
  outline: none;
}

video {
  position: fixed;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  z-index: -100;
  transform: translateX(-50%) translateY(-50%);
  background: url(""); /* insert image url*/
  background-size: cover;
}