JSFiddle - React, Tailwind, and code Playground

HTML

<div class="button0">
    <input type="button" style="width: 303px;height: 165px;" value="Button"/>
</div>

CSS

.button0 input{
    position:fixed;
    left:41px;
    top:12px;
    font-family:Arial;
    font-size:40px;
    font-weight:normal;
}

JavaScript

$(document).keyup(function(event) {
    if (event.which == 65) {
        $('.button0 input').css('color', 'rgb(0, 0, 255)');
    }
});
$(document).keypress(function(event) {
    if (event.which == 97) {
        $('.button0 input').css('color', 'rgb(128, 0, 0)');
    }
});