.hidden {
        display: none;
        visibility: hidden;
      }
      body {
        font-family: Helvetica, Arial, sans-serif;
      }
      h1 {
        margin-top: 0px;
        padding-top: 0px;
      }
      h1, h2, h3, h4, h5 {
        margin-bottom: 3px;
      }
      h2, h3 {
        margin-top: 6px;
      }
      h1+p {
        margin-top: 3px;
      }
      table {
        border-collapse: collapse;
        margin-bottom: 15px;
      }
      table, th, td {
        border: solid thin black;
      }
      th, td {
        padding: 3px 5px 3px 5px;
      }
      th {
        background-color: #eee;
      }
      td.rowNumber, th.rowNumber {
        text-align: right;
      }
      th.tex, td.tex,
      th.mathJax, td.mathJax,
      th.ruleset, th.ruleset,
      th.mathSpeak, td.mathSpeak {
        text-align: left;
      }
      td.actionButtons, th.actionButtons {
        text-align: center;
      }
      label.sourceText, button.translate {
        vertical-align: top;
      }
      button.c2cb {
        background: url(data:image/png;base64,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)
        no-repeat
        center center;
        background-size: 24px 24px;
        padding: 13px 13px 13px 13px;
        margin-left: 3px;
        margin-right: 3px;
      }
      button.edit {
        background: url(data:image/png;base64,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)
        no-repeat
        center center;
        background-size: 24px 24px;
        padding: 13px 13px 13px 13px;
        margin-left: 3px;
        margin-right: 3px;
      }
      textarea#MathInput {
        width: 600px;
        height: 100px;
        font-size: 110%;
      }
      div#translationOutput {
        clear: both;
      }