src/vs/workbench/contrib/welcome/walkThrough/browser/walkThroughPart.ts/WalkThroughPart/layout
class WalkThroughPart:	layout(dimension: Dimension): void {
		this.size = dimension;
		size(this.content, dimension.width, dimension.height);
		this.updateSizeClasses();
		this.contentDisposables.forEach(disposable => {
			if (disposable instanceof CodeEditorWidget) {
				disposable.layout();
			}
		});
		const walkthroughInput = this.input instanceof WalkThroughInput && this.input;
		if (walkthroughInput && walkthroughInput.layout) {
			walkthroughInput.layout(dimension);
		}
		this.scrollbar.scanDomNode();
	}