JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
 <div align="center">
        <h4 align="center"><u>Paste text in the field below to divide text into
        paragraphs.</u></h4><br>
        <br>
        <textarea placeholder="Type text here, then press the button below." cols="50" id="textarea1" rows="10">
</textarea><br>
        <br>
        <button id="Go">Divide Text into Paragraphs!</button>
    </div>
    <hr>
    <h2 align="center">Divided Text Will Appear Below:</h2>
    <div>
        <div align="center" id="text_land" style="font-family: monospace">
        </div>
    </div>

CSS

@media print {
    p {
        page-break-inside: avoid;
    }
}

p {
    position: relative;
}

@media print {
    .no-print,.no-print * {
        display: none !important;
    }
}

p {
    border-style: solid;
}

p {
    color: #000;
}

p {
    display: block;
    text-align: justify;
    border-width: 5px;
    font-size: 19px;
}

p {
    overflow: hidden;
    height: 300px;
    width: 460px;
    word-wrap: break-word;
}

JavaScript

$(function() {
    $("#Go").on('click', function() {
        var theText = $('textarea').val();
        var numberOfCharacters = 300;
        while (theText.length) {
            while (theText.length > numberOfCharacters &&
                theText.charAt(numberOfCharacters) !== ' ') {
                numberOfCharacters++;
            }
            $("#text_land").append("<br><\/br><p>" + theText.substring(
                    0, numberOfCharacters) +
                "<\/p><br><\/br>");
            theText = theText.substring(numberOfCharacters);
            numberOfCharacters = 300;
            $('p').attr('contenteditable', 'true');
            $("p").addClass("text");
        }
    });
    
    $('#text_land').keyup(function(e) {
      if(e.keyCode == '13') {
        $(this).append("<br><br><p contenteditable='true' class='text'></p>");
        $('p.text:last-child').focus();
      }
		});
    
    
})
$('select').on('change', function() {
    var targets = $('#text_land p'),
        property = this.dataset.property;
    targets.css(property, this.value);
}).prop('selectedIndex', 0);
(end);