# Container

Containers are used to group objects to simply movement, alignment, positioning, and size. Containers are usually invisible, although they can draw their outlines in Gum to help visualize their position and size.

<figure><img src="https://2695663588-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M_fzQmxQ1VeUFHcoo2c%2Fuploads%2Fgit-blob-719d685e62d5f5791e45e900570da210d093f5f3%2Fimage%20(13).png?alt=media" alt=""><figcaption><p>A container holding four ColoredRectangle instances</p></figcaption></figure>


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