body {
.container {
  max-width: 400px;
  margin: auto;
  background: red;
  padding: 2px;
  border-radius: 10px;
}

audio {
  margin: 25px 0;
  width: 75%;
}

button {
  margin: 10px;
  padding: 10px 20px;
  background: #1db954;
  border: none;
  border-radius: 5px;
  color: blue;
  font-size: 16px;
  cursor: pointer;
}

button:hover {
  background: yellow;
}
.container{
    position: absolute;
    top: 90px;
}