.container{
    max-width: 600px;
  }
  .btn{
    background: #43d9be;
    color: white;
    outline: none !important;
    box-shadow: none !important;
  }
  .btn:focus{
    outline: none !important;
  }

  .username{
    font-weight: bold;
  }

  .time {
    font-size: .7em;
    color: #999;
  }

  .update-mssg{
    text-align: center;
    margin: 20px auto;
  }