Alignment of fields

Hello, I have been trying for hours to align these fields properly. I’m CSS and HTML savvy and I have no clue why nothing is working. Hope’s its not a theme issue, but see here: http://www.yourtraveldna.com/wp-content/uploads/2016/07/Screen-Shot-2016-07-22-at-1.28.52-PM.png
the button does not align to the email block, can anyone help?? Thank you!

https://ww.wp.xz.cn/plugins/contact-form-7/