JSFiddle - React, Tailwind, and code Playground

HTML

<form>
    <input type="text" class="text-input" size="40"/>
    <input type="button" value="Upload" id="upload" class="submit"/>
</form>

CSS

body {
	margin-left:50px;
    margin-top:20px;
}
.submit {
	-moz-box-shadow:inset 0px 1px 0px 0px #cae3fc;
	-webkit-box-shadow:inset 0px 1px 0px 0px #cae3fc;
	box-shadow:inset 0px 1px 0px 0px #cae3fc;
	background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #79bbff), color-stop(1, #4197ee) );
	background:-moz-linear-gradient( center top, #79bbff 5%, #4197ee 100% );
	filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#79bbff', endColorstr='#4197ee');
	background-color:#79bbff;
	-moz-border-radius:6px;
	-webkit-border-radius:6px;
	border-radius:6px;
	border:1px solid #469df5;
	display:inline-block;
	color:#ffffff;
	font-family:arial;
	font-size:14px;
	font-weight:bold;
	padding:5px 14px;
	text-decoration:none;
	text-shadow:1px 1px 0px #287ace;
    cursor:pointer;
}.submit:hover {
	background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #4197ee), color-stop(1, #79bbff) );
	background:-moz-linear-gradient( center top, #4197ee 5%, #79bbff 100% );
	filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#4197ee', endColorstr='#79bbff');
	background-color:#4197ee;
}.submit:active {
	position:relative;
	top:1px;
}

.text-input {
    padding: 6px;
    font-size: 13px;
    border: 1px solid #d5d5d5;
	color: #333;
	border-radius: 4px 4px 4px 4px !important;
}