style.css

body {
    color: black;
    font-size: 1em;
    font-family: arial;
}
h1 {
    color: black;
    font-family:verdana;
}

table {
    position: relative;
    left: 25%;
    width: 50%;
}

#gameCanvas {
    border:1px solid #d3d3d3;
}

.black_overlay {
    display: none;
    position: absolute;
    top: 0%;
    left: 0%;
    width: 100%;
    height: 100%;
    background-color: black;
    z-index:1001;
    -moz-opacity: 0.8;
    opacity:.80;
    filter: alpha(opacity=80);
}
.popup_content {
    display: none;
    position: absolute;
    text-align: center;
    top: 10%;
    left: 33%;
    width: 33%;
    height: 20%;
    padding: 10px;
    border: 16px solid #0000cc;
    background-color: white;
    z-index:1002;
    overflow: auto;
}

.myButton {
	-moz-box-shadow:inset 0px 1px 0px 0px #bbdaf7;
	-webkit-box-shadow:inset 0px 1px 0px 0px #bbdaf7;
	box-shadow:inset 0px 1px 0px 0px #bbdaf7;
	background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #79bbff), color-stop(1, #378de5));
	background:-moz-linear-gradient(top, #79bbff 5%, #378de5 100%);
	background:-webkit-linear-gradient(top, #79bbff 5%, #378de5 100%);
	background:-o-linear-gradient(top, #79bbff 5%, #378de5 100%);
	background:-ms-linear-gradient(top, #79bbff 5%, #378de5 100%);
	background:linear-gradient(to bottom, #79bbff 5%, #378de5 100%);
	filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#79bbff', endColorstr='#378de5',GradientType=0);
	background-color:#79bbff;
	-moz-border-radius:6px;
	-webkit-border-radius:6px;
	border-radius:6px;
	border:1px solid #84bbf3;
	display:inline-block;
	cursor:pointer;
	color:#ffffff;
	font-family:Arial;
	font-size:15px;
	font-weight:bold;
	padding:6px 24px;
	text-decoration:none;
	text-shadow:0px 1px 0px #528ecc;
}
.myButton:hover {
	background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #378de5), color-stop(1, #79bbff));
	background:-moz-linear-gradient(top, #378de5 5%, #79bbff 100%);
	background:-webkit-linear-gradient(top, #378de5 5%, #79bbff 100%);
	background:-o-linear-gradient(top, #378de5 5%, #79bbff 100%);
	background:-ms-linear-gradient(top, #378de5 5%, #79bbff 100%);
	background:linear-gradient(to bottom, #378de5 5%, #79bbff 100%);
	filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#378de5', endColorstr='#79bbff',GradientType=0);
	background-color:#378de5;
}
.myButton:active {
	position:relative;
	top:1px;
}