style.css

body {
	background: url("https://ak9.picdn.net/shutterstock/videos/9057499/thumb/1.jpg") no-repeat center center fixed; 
	-webkit-background-size: cover;
	-moz-background-size: cover;
	-o-background-size: cover;
	background-size: cover;
	font-family: 'Source Sans Pro', 'sans-serif';
}

#app{
    max-width: 1024px;
    margin: auto;
	background-color: rgba(255,255,255, 0.6);    
	padding: 30px 50px;
}

#play-area {
    border: 1px solid green;
    display: flex;
	justify-content: stretch;
}

.title{
	font-size: 60px;
	text-align: center;
	margin-bottom: 30px;
}

.result{
	text-align: center;
	margin-top: 30px;
	font-size: 25px;
	background: white;
	color: #fd6700;
}

.play-btn{
	border: 0;
	box-shadow: none;
	border-radius: 0px;
	padding: 10px 15px;
	border-radius: 5px;
	display: block;
	margin: auto;
	background: #fd6700;
	color: white;
	font-size: 20px;
	cursor: pointer;
}

.ball-row{
	display: flex;
	justify-content: space-around;
	margin-bottom: 30px;
	margin-top: 30px;
}

.ball-box{
	width: 130px;
	height: 130px;
	border-radius: 50%;
	word-break: break-all;
	text-align: center;
	display: flex;
	justify-content: center;
	align-items: center;
	-webkit-box-shadow: 10px 10px 5px 0px rgba(0,0,0,0.75);
	-moz-box-shadow: 10px 10px 5px 0px rgba(0,0,0,0.75);
	box-shadow: 10px 10px 5px 0px rgba(0,0,0,0.75);
}

.player {
	
}

.player.winner{
	font-weight: bold;
	color: red;
}

.player.winner::after{
	content: " (winner)"
}