.vbox {
	display: flex;
	flex-direction: column;
}

.hbox {
	display: flex;
	flex-direction: row;
}

.flex_end {
	justify-content: end;
}

.fill {
	flex: 1;
}

.center {
	display: flex;
	justify-content: center;
	align-items: center;
}

.flex_window .window_content {
	display: flex;
	flex-direction: column;
}

.flex_row_window .window_content {
	display: flex;
	flex-direction: row;
}

.no_padding_window .window_content {
	padding: 0;
}