.CodeMirror-foldmarker {
  background-color: #eee;
  border: 2px solid #ddd;
  color: #888;
  border-radius: 0.2em;
  margin: 0 1px;
  padding: 0 1px;
  cursor: pointer;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 14px;
  font-weight: 600;
  vertical-align: middle;
  
}
.CodeMirror-foldgutter {
  width: .7em;
}
.CodeMirror-foldgutter-open,
.CodeMirror-foldgutter-folded {
  cursor: pointer;
}
.CodeMirror-foldgutter-open:after {
  content: ">";
  display: inline-block;
  transform: rotate(90deg);
  font-weight: 1000;
  font-family: monospace;
}
.CodeMirror-foldgutter-folded:after {
  content: ">";
  font-weight: 1000;
  font-family: monospace;
}