**Is is possible to edit the raw html content of a deployed .aspx page without recompiling or redeploying?**

For example say I have a deployed .net 4.6 aspx website. If i give someone FTP access to the .aspx files on the server can that person edit and update the layout of html elements without recompiling?

This might occur when a website is deployed onto a web host and a 3rd party contractor is requested to help improve the gui without being giving full access to the .sln file [eg c#\wcf\classes etc..].