JSFiddle - React, Tailwind, and code Playground

HTML

<div id="log">
    <div class="wrapper">
    </div>
  </div>
  <button id="add">Add Entry</button>

CSS

#log {
  position: absolute;
  bottom: 100px;
  left: 5px; right: 5px;
  background-color: lightgray;
  height: 30px;
  line-height: 30px;
  font-size: 20px;
  padding-left: 10px;
  overflow: hidden;
  float: bottom;
}
.wrapper {
    position: absolute;
    left: 0;
    bottom: 0;
}

JavaScript

function log(m) {
  $('#log .wrapper').append('<div>' + m + '</div>');
}
  
$("#add").on('click',function() {
  log("New Entry Added...")
})

$('#log').hover(
  function() {
    $('#log').animate({"height":"200px"})
  },
  function() {
    $('#log').animate({"height":"30px"})
  }
)

$(document).ready(function() {
  log('Document Ready.')
  
})