JSFiddle - React, Tailwind, and code Playground

HTML

<button name="subject" id="button1" type=" submit" style="height:250px; width:480px; float:right" onClick='trackOpenWindow();'>
    <h1>TRACK ACTIVITY</h1>
</button>

CSS

body {
    background-color:#B5B5B5;
}
#button1 {
    border:1px #333 solid;
    padding:10px;
    background-color:white;
    -webkit-border-radius:40px;
    -moz-border-radius:40px;
    border-radius:40px;
}
input[type=submit] {
    -webkit-transition:all 0.3s ease-in-out;
    -moz-transition:all 0.3s ease-in-out;
    -o-transition:all 0.3s ease-in-out;
    -ms-transition:all 0.3s ease-in-out;
    transition:all 0.3s ease-in-out;
}
#button1:hover {
    background-color:#ff0;
    border-radius:10px;
    box-shadow:0px 0px 10px #555;
}

JavaScript

function trackOpenWindow() {
    if (!window.memwin || window.memwin.closed) {
        memwin = window.open("TRACK_Member.php", "myWin2", "toolbar=yes, scrollbars=yes, resizable=yes, height=590,width=1200");
    }
    window.memwin.focus()
}