# Flex layout [flex-layout](https://github.com/angular/flex-layout) layout engine based on directives designed for Angular. It's easy to use. More details to flex-layout [wiki](https://github.com/angular/flex-layout/wiki). ### Issues I found some problems when using it. The spacing between columns needs to be implemented by `fxLayoutGap` instruction. This directive doesn't work very well for some complicated reasons. Someone been suggested to add the `fxLayoutGutter` directive, but it has not been implemented officially for various reasons. To solve this problem, ng-matero has temporarily added two classes, `matero-row` and `matero-col` to achieve columns spacing, which may be removed in the future. Users can see the dashboard code of the full DEMO. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://nzbin.gitbook.io/ng-matero/responsive/flex-layout.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.