I had a small problem, how to make the oval button and remove the offset slider

I had a small problem, how to make the oval button and remove the offset slider

I have checked your form and it seems that you were able to make the submit button of your form oval and the horizontal scrollbars removed. 

However, if your concern still isn't resolved in your end, you can give us more information, like, what browser are you using when viewing your form, what device, or if it is a mobile phone, what mobile phone is it? Also, is your form embedded on a website? If it is, can you provide us the link to that website so we may explore it?

We will wait for your response. Thank you.