body{
	background-color: #27ae60;
	text-align: center;
}

.container{
	width: 600px;
	border: 3px solid #e74c3c;
	border-radius: 40px;
	margin: auto;
}

.btn{
	cursor: pointer;
}

#tieu-de{
	color: #e74c3c;
}

#anh-tuong-tac{
	border: 1px solid #ffff;
	border-radius: 30px;
}