html {
    font-size: calc(15px + 0.390625vw);
    
}

.background-image {
	background-image: url('bg.png');
	background-size: cover;
	background-position: center;
	height: 100%;
	width: 100%;
	position: fixed;
	top: 0;
	left: 0;
}

.centered-div {
	background-color: rgba(0, 0, 0, 0.8);
	color: white;
	width: 90%;
	height: auto;
	max-width: 800px;
	max-height: 90%;
	position: absolute;
    line-height: 1.5;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	padding: 20px;
	box-sizing: border-box;
	overflow-y: auto;
	text-align: justify;
}