wp-calypso/client/layout/sidebar-v2/style.scss

.sidebar-v2 {
	display: flex;
	flex-direction: column;
	gap: 16px;

	height: 100vh;
	background-color: var(--color-sidebar-background);
	color: var(--color-sidebar-text);

	margin: 0;
	padding: 16px;
	box-sizing: border-box;
}

.sidebar-v2__main {
	flex-grow: 1;
	overflow-y: auto;
	height: 0;  // To support scrollable in the main content area, we set height to 0.

	// Navigator container has some issue displaying edges without adding 1px padding.
	// This is to offset the 1px padding and achieved the sidebar 16px padding.
	margin: -1px;
}

.sidebar-v2__footer {
	margin-block-start: auto;
}