strange text box format in post

Hi. I made a post on d-tube with a text body to post to steemit. The post is here

https://steemit.com/lathe/@visionm/whusxgym

but the text is showing in a text box that scrolls across as if it is not wrapping the text down the page.

Does anyone know why this is happening and what can I do to make the text wrap down the page?