body{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(0, 0, 0, 0.4);
  
  

  
  #player{
    min-width: 400px;
    height: 50px;
    border-radius: 40px;
    border: 1px solid black;
    box-shadow: 10px 10px 10px black;
    
    display: flex;
    justify-content: center;
    align-items: center;
    
    div{
      margin: 5px;
      cursor: pointer;
    }
    
    #playButton.play{  
      width: 0; 
      height: 0;
      border-top: 15px solid transparent;
      border-left: 30px solid green;
      border-bottom: 15px solid transparent;
    
    }
    
    #playButton.pause{
      width: 10px; 
      height: 30px;
      border-left: 10px solid green;
      border-right: 10px solid green;
    }
    #stopButton{
      width: 30px; 
      height: 30px;
      background: green;
    }
    
    #duration{
      display: block;
      width: 102px;
      height: 10px;
      border: 1px solid black;
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      
      span{
        display: block;
        width: 0;
        height: 9px;
        background: green;
        
      }
    }
    
  }
}

