const style = document.createElement("style");
style.innerHTML = `
body { overflow-x: hidden; }

* {
	box-sizing: border-box;
	color: #FFF;
	margin: 0;
	padding: 0;
}

.bg {
	background-image: linear-gradient(to bottom, #224, #A7F);
	background-position: center;
	background-repeat: no-repeat;
	background-size: cover;
	height: 100%;
	left: 0;
	position: fixed;
	top: 0;
	width: 100%;
	z-index: -1;
}`;
document.head.appendChild(style);