*{
  font-family: "Helvetica Neue", "Arial", sans-serif;
}

.container {
  display: block;
  float:left;
  font-family: "Helvetica Neue", "Arial", sans-serif;
  font-size: 20px;
  width: 15%;
  height: 90%;
  border: 2px solid black
}


.demo-container{
  display: inline-block;
  float: right;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 75%;
  height: 90%;
  border: 2px solid black;
}