design.css

@viewport {
   width: device-width;
   user-zoom:fixed;
}

body {
	margin: 0px;
	background: #0a0a0a;
	font-family: Arial;
	overflow:hidden;
}

[data-container=panel] {
	background-color: rgba(8, 8, 8, 0.68);
	border: solid 1px #252525;
	box-shadow: 0px 2px 1px #000000;
	padding: 6px;
/*	margin: 5px;*/
	float:left;
	box-sizing: border-box;
	height:100%;
	width:100%;
	overflow: hidden;
}

[data-container=panelContainer] {
	float: left;
  width: 100%;
  height: 100%;
  /*padding: 4px;*/
	padding: 0.2vw;
  box-sizing: border-box;
}

[data-container=split] {
	box-sizing: border-box;
/*	display: flex;
	flex-direction: column;*/
	height:100%;
	width:100%;
	float: left;
}

[data-container=main] {
	height:100%;
	width:100%;
	position:absolute;

	box-sizing: border-box;
		padding: 0.2vw;
    background: radial-gradient(black 15%, transparent 15%) 0 0, radial-gradient(black 15%, transparent 15%) 8px 8px, radial-gradient(rgba(255,255,255,.1) 15%, 
transparent 20%) 0 1px, radial-gradient(rgba(255,255,255,.1) 15%, transparent 20%) 8px 9px;
    background-size: 16px 16px;
    background-color: #171717;
}