eval.css

.left-side, .right-side {
  display: inline-block;
  float: left;
  margin: 0 16px;
}

.difficulty-graph {
  height: 310px;
  width: 620px;
}

.difficulty-graph>div>div>a {
  top: 36px !important;
}

.difficulty-source .btn {
  margin: 12px 8px 8px;
}

.difficulty-source .eval-error-message {
  color: red;
}

.CodeMirror {
  border: 1px solid #eee;
  font-size: 12px;
  height: 40px;
  margin: 0 auto;
  text-align: left;
  width: 640px;
}

.CodeMirror-scroll {
  overflow-y: none;
  overflow-x: auto;
}