Notehub side-by-side

gistfile1.css

html, body, form, #preview, .central-element {
  height: 100%;
}

#preview, 
.central-element {
  width: 45%;
  float: left;
  margin: 0 !important;
  margin-left: 2.5% !important;
  overflow-y: auto;
  overflow-x: hidden;
}

#preview {
  border-right: 1px dashed black;
  padding-right: 2.5%;
}

#preview *:last-child {
  margin-bottom: 3em;
}

textarea {
  margin-top: 6em;
  width: 99%;
  height: 80%;
  resize: vertical;
}

#dashed-line {
  display: none !important;
}