html,
body {
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
  font-family: Arial, Helvetica, sans-serif;
}
textarea{
    margin-left: calc(100% - 200px);
}

@media (max-width: 480px) {
    #keys {
        font-size: 20px;
    }
    #resultsTable {
        font-size: 20px;
        width: 80%;
    }
    thead{
        font-size: 10px;
    }
    th{
        font-size: 10px;
    }
    td{
        font-size: 10px;
    }
    textarea{
        font-size: 10px;
        width: 80%;
    }
}