edit.css

form .section,
.form-item
{
  position: relative;
}

.description-left,
.description-right
{
  background: #def;

  border-radius: 1em;
  -moz-border-radius: 1em;
  -webkit-border-radius: 1em;

  color: #000;
  display: none;
  padding: 1em;
  position: absolute;
  top: 0;
  width: 156px;
  z-index: 1;
}

.description-left
{
  margin-right: 3em;
  right: 100%;
}

.description-right
{
  left: 100%;
  margin-left: 3em;
}

div.description-dialog {

  position: absolute;
  color: #444;
  left: -200px;
  width: 156px;
  padding: 4px 8px;
  background-color: #def;
  border-radius: 4px;
  -moz-border-radius: 4px;
  -webkit-border-radius: 4px;
  z-index: 10750;
}