src/vs/workbench/contrib/notebook/browser/diff/diffComponents.ts/AbstractElementRenderer/updateBorders
class AbstractElementRenderer:	updateBorders() {
		this.templateData.leftBorder.style.height = `${this.cell.layoutInfo.totalHeight - 32}px`;
		this.templateData.rightBorder.style.height = `${this.cell.layoutInfo.totalHeight - 32}px`;
		this.templateData.bottomBorder.style.top = `${this.cell.layoutInfo.totalHeight - 32}px`;
	}