I have an issue with my form. On my computer/iPad/iPhone everything looks as it should be. Testing my site on my work computer and the text field colour and buttons are grey where they should be white?
Please add the link to your read only site so we can have a look… I have tested the live site on my machine (mac) and it looks as it should (white).
One thing you should try to do is open the website on your work computer in incognito mode and see if it improves… if it does - most likely its cookies that are the offenders and you should clear them…