.banner {

   
    /*background: radial-gradient( at center, #28c7ba, #1a867d);*/
	height: 100vh;
	background-size: cover;
	position: relative;
	background-position: 50%
}

#particles-js {
	position: absolute;
	width: 100%;
	height: 50%;
	left: 0;
	top: 50%;
	-webkit-transform: translateY(-50%);
	transform: translateY(-50%)
   
}