Vault GUI browser support

[!IMPORTANT]
Documentation Update: Product documentation, which were located in this repository under /website, are now located in hashicorp/web-unified-docs, colocated with all other product documentation. Contributions to this content should be done in the web-unified-docs repo, and not this one. Changes made to /website content in this repo will not be reflected on the developer.hashicorp.com website.

Using the Vault GUI with an unsupported browser can degrade functionality for some features and render others nonfunctional. We strongly encourage using the latest version one of the following, supported browsers:

• Chrome
• Firefox
• Safari
• Microsoft Edge

Some GUI features, such as the clipboard, also require a secure context to function properly. We strongly recommend enabling TLS to ensure functionality that requires a secure context behaves as expected.