structure.css

body * {
	box-sizing: border-box;
}

a, input, textarea, select, button {
	font-size: unset;
	line-height: unset;
	border: unset;
	font-family: unset;
	color: unset;
	background-color: unset;
}

br.hide{
	display: none;
}

body {
	margin: 0;
/*	user-select: none;*/
}

*::-webkit-scrollbar {
	opacity: 0;
	display:none;
}

*::-webkit-scrollbar-thumb {
}

.expand {
	flex: 1 0 0;
}

.wrap {
	width: 100%;
	height: 100%;
}

.flex {
	display: flex;
}

.column {
	-webkit-flex-direction: column;
	    -ms-flex-direction: column;
	        flex-direction: column;
}

.row {
	-webkit-flex-direction: row;
	    -ms-flex-direction: row;
	        flex-direction: row;
}

.center {
	-webkit-align-items: center;
	    -ms-align-items: center;
	        align-items: center;
	-webkit-justify-content: center;
	    -ms-justify-content: center;
	        justify-content: center;
}