.textareaLinesNumbers {
  position: relative;
}

.textareaLinesNumbers textarea.linesContainer {
  display:block;
  border:none;
  position:absolute;
  overflow:hidden;
  text-align:right;
  padding-right:0.2em;
  z-index:0;
  resize:none;
}

.textareaLinesNumbers textarea:not(.linesContainer) {
  z-index:1;
  position:relative;
  resize:none;
}

.textareaLinesNumbers .ui-resizable-se {
  bottom: 13px;
  right: -2px;
}