Select the Resources tool from the Tool Menu of your site.
To the right of the folder where you want to create the HTML page, from the Actions drop-down menu, select Create HTML Page.
Enter (or paste) the text content of the document into the Rich Text Editor.
Use the Rich Text Editor tools to format the text, add images, links or other HTML items to the document.
Click Continue to save your document when you are finished editing.
Enter a display name for the HTML document and any other information as needed. Click Finish when done.