html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

#kanban {
    width: calc(100% - 300px);
    height: calc(100% - 50px);
}

@media only screen and (max-width: 400px) {
	smart-kanban {
		width: 100%;
	}
}

html,
body {
    padding: 0;
    margin: 0;
}