.autoexpand {
  position: relative;
  width: 100%;
}
.autoexpand textarea {
  position: absolute;
  top: 0px;
  bottom: 0px;
  left: 0px;
  right: 0px;
  width: 100%;
  height: 100%;
  resize: none;
}
.autoexpand textarea, .autoexpand div {
  font-size: 16px;
  font-family: sans-serif;
  border: 1px solid grey;
  line-height: 1.3em;
  white-space: pre-wrap;
  box-sizing: border-box;
  margin: 0px;
  border-radius: 5px;
}
.autoexpand div {
  word-break: break-all;
}