step.css

@import url(https://static2.sharepointonline.com/files/fabric/office-ui-fabric-core/9.6.1/css/fabric.min.css);

body {
  display: flex;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

img {
  max-width: 100%;
}

li {
  margin-bottom: 3px;
}

blockquote {
  background: white;
  padding: 0px 5px;
}

body.ms-Fabric {
  font-size: 16px;
  line-height: 20px;
}

#app {
  flex: 1 1 40%;
  padding: 50px;
}

#app pre {
  border-radius: 2px;
  border: 1px solid #999;
  padding: 15px;
}

#markdownReadme {
  box-sizing: border-box;
  flex: 1 1 60%;
  background: #f3f2f1;
  padding: 50px;
  margin: 0 auto;
  height: 100vh;
  overflow: auto;
}

#markdownReadme.exercise {
  background-color: #ecf6fd;
}

#markdownReadme pre {
  padding: 5px;
  border-radius: 3px;
  background: #1e1e1e;
  margin: 15px 0;
  overflow: auto;
}

#markdownReadme code {
  font-family: Consolas, Menlo, Monaco, monospace;
  font-size: 0.9em;
  background-color: white;
  padding: 0.2em 0.4em;
  border-radius: 5px;
}

#markdownReadme code.hljs {
  background-color: inherit;
  font-weight: bold;
}

/**
 * highlight.js style
 */
/*
 * Visual Studio 2015 dark style
 * Author: Nicolas LLOBERA <nllobera@gmail.com>
 */

.hljs {
  display: block;
  overflow-x: auto;
  padding: 0.5em;
  background: #1e1e1e;
  color: #fff;
}

.hljs-keyword,
.hljs-literal,
.hljs-symbol,
.hljs-name {
  color: #5da4df;
}
.hljs-link {
  color: #569cd6;
  text-decoration: underline;
}

.hljs-built_in,
.hljs-type {
  color: #4ec9b0;
}

.hljs-number,
.hljs-class {
  color: #b8d7a3;
}

.hljs-string,
.hljs-meta-string {
  color: #d69d85;
}

.hljs-regexp,
.hljs-template-tag {
  color: #9a5334;
}

.hljs-subst,
.hljs-function,
.hljs-title,
.hljs-params,
.hljs-formula {
  color: #dcdcdc;
}

.hljs-comment,
.hljs-quote {
  color: #6dce5e;
  font-style: italic;
}

.hljs-doctag {
  color: #608b4e;
}

.hljs-meta,
.hljs-meta-keyword,
.hljs-tag {
  color: #9b9b9b;
}

.hljs-variable,
.hljs-template-variable {
  color: #bd63c5;
}

.hljs-attr,
.hljs-attribute,
.hljs-builtin-name {
  color: #9cdcfe;
}

.hljs-section {
  color: gold;
}

.hljs-emphasis {
  font-style: italic;
}

.hljs-strong {
  font-weight: bold;
}

/*.hljs-code {
  font-family:'Monospace';
}*/

.hljs-bullet,
.hljs-selector-tag,
.hljs-selector-id,
.hljs-selector-class,
.hljs-selector-attr,
.hljs-selector-pseudo {
  color: #d7ba7d;
}

.hljs-addition {
  background-color: #144212;
  display: inline-block;
  width: 100%;
}

.hljs-deletion {
  background-color: #600;
  display: inline-block;
  width: 100%;
}