#container{
	height: 100vh;
	padding: 1em;
	position: relative;
	overflow: hidden;
	transition: opacity 500ms;
}
.balloon{
	position: absolute;
	border-radius: 75% 75% 70% 70%;
	width: 10vmin;
	height: 12vmin;
	animation: balloon linear forwards;
	/*background-color: orange;*/
}
.balloon:after {
    content: "▲";
    text-align: center;
    display: block;
    position: absolute;
    color: inherit;
    top: 85%;
    left: 0;
    right: 0;
    margin: auto;
}
@keyframes balloon{
	0%{
		opacity: 0;
	}
	5%{
		opacity: 1;
	}
	100%{
		top: -30%;
	}
}
#score{
	position: fixed;
	left: 10px;
	top: 10px;

}