Contact Form from wordpress takes more than 100% width even I set max-width (100%)

Hey guys,On my page http://ift.tt/2jU3LsO I am using a contact form plug-in from wordpress called contact-form-7 (contact form is on the bottom of the page).With this contact form I have set the max-width to 100% but its still longer on mobile. Any ideas what I did wrong? I am trying to figure it out but I have no idea. via /r/css http://ift.tt/2tdK8gi