style.css

html, body {
    height: 100%;
    width: 100%;
    padding: 0;
    margin:0;
  }
  
  div.wrapper {
    background: goldenrod;
    color: whitesmoke;
    display: flex;
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    flex-direction: column;
  }

  .actions {
    margin-top: 2px;
  }

  #amount {
    margin: 1rem;
    width: 420px;
    height: 60px;
    font-size: 30px;
    text-align: center;
    border-radius: 10px;
  }

  input#amount {
    margin-top: 5px;
  }
  
  .buttons {
    display: flex;
    gap: 20px;
  }
  
  button {
    width: auto;
    height: 60px;
    font-size: 30px;
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    background: salmon;
    border-radius: 30px;
    cursor: pointer;
    
  }

  button:hover {
    background: greenyellow;
  }

  .current-balance {
    color: black;
    font-size: 25px;
  }

  div#balance.current-balance {
    margin-top: 10px;
  }

  h1 {
    color: black;
    font-size: 30px;
  }