JSFiddle - React, Tailwind, and code Playground

HTML

<div class="div">Animate Me!</div>
<div class="nav">
    <div class="start">start</div>
    <div class="reset">reset</div>
</div>

CSS

.div {
    position: absolute;
    top: 150px;
    left: 50px;
    height: 100;
    width: 100;
    background-color: blue;
}
.start, .reset {
    display: table-cell;
    width:50%;
}
.start {
    background-color:green;
}
.reset {
    background-color:red;
}
}
.nav {
    position: absolute;
    width: 100%;
    top: 0;
    right: 0;
    left: 0;
    height: 60px;
}

JavaScript

$('.start').click(function () {
    if(!$(this).hasClass('move')){
        $(this).addClass('move');
        $('.div').animate({
            left: '+=' + 100
        });
    }
});

$('.reset').click(function () {
    $('.start').removeClass('move');
    $('.div').animate({
        left: 50
    });
});