body{
    font-size: 19px;
    font-family:Arial, Helvetica, sans-serif;
  }
  
  
  form{
   background-color: #bbbbbb;
    width: 25%;
    margin: 50px auto;
    text-align: left;
    padding:20px;
    border: 1px solid #bbbbbb;
    border-radius: 3px;
  
  }
  
  .input-group{
    margin: 10px 0px 10px 0px;
  }
  .input-group input{
    height: 30px;
    width: 100%;
    padding: 5px 10px;
    font-size: 16px;
    border-radius: 5px;
    border: 1px solid rgb(141, 140, 140);
    }
  
    .btn{
      background-color: #4CAF50;
      border: none;
      color: white;
      padding: 15px 32px;
      text-align: center;
      text-decoration: none;
      display: inline-block;
      font-size: 16px;
      margin: 4px 2px;
      cursor: pointer;
    
  }