body {
  margin: 0;
  padding:0;
  background-color: green;
  color: black;
  font-family: sans-serif;
  box-sizing: border-box;
}
.container{
  width: 100%;
  height: 100vh;
  background: #333;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  
}
.music-player{
  width: 400px;
  padding: 25px 35px;
  background: #ffe0e5;
  text-align: center;
}
nav{
  display: flex;
  justify-content: space-between;
  margin-bottom: 30px;
}
nav.circle{
  
}