custom.css

/*
 *  Copyright 2017 TWO SIGMA OPEN SOURCE, LLC
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

@font-face {
  font-family: 'Roboto Mono';
  src: url('fonts/robotomono/robotomono.woff') format('woff'),
  url('fonts/robotomono/robotomono.ttf') format('truetype');

  font-style: normal;
  font-weight: normal;
}

@font-face {
  font-family: 'Roboto Mono';
  src: url('fonts/robotomono/robotomono-bold.woff') format('woff'),
  url('fonts/robotomono/robotomono-bold.ttf') format('truetype');
  font-weight: bold;
}

@font-face {
  font-family: 'Lato';
  src: url('fonts/lato/Lato-Regular.woff') format('woff'),
  url('fonts/lato/Lato-Regular.ttf') format('truetype');

  font-style: normal;
  font-weight: normal;
}

@font-face {
  font-family: 'Lato';
  src: url('fonts/lato/Lato-Black.woff') format('woff'),
  url('fonts/lato/Lato-Black.ttf') format('truetype');
  font-weight: bold;
}

.improveFonts .CodeMirror pre,
.improveFonts .rendered_html pre,
.improveFonts .rendered_html code,
.improveFonts .output_area pre {
  font-family: "Roboto Mono", monospace, sans-serif;
}

div.output_text {
  line-height: 1.3em;
}

.improveFonts .widget-html-content,
.improveFonts .rendered_html,
.improveFonts .cm-header-1,
.improveFonts .cm-header-2,
.improveFonts .cm-header-3,
.improveFonts .cm-header-4,
.improveFonts .cm-header-5,
.improveFonts .cm-header-6 {
  font-family: "Lato", Helvetica, sans-serif;
}