Contact form is wider tan screen in mobile view

there is an error in the contact form, when I open this page in mobile you can check it.
plz solve this issue.

Hello,

Can you please deactivate the Autoptimize and leave here a note?

By the way, you can create a staging site for the troubleshooting purposes, here is a tutorial:

Kind Regards, Roman.
aThemes Support

i have deactivate plugin, i am not interseting in staging, kindly solve this issue. ASAP.

Hello,

It doesn’t look like a Sydney theme issue, but you can try to add this CSS code in the Customize → Additional CSS section, as a workaround:

form.wpcf7-form > .row {
    margin: 0;
}

span.wpcf7-form-control-wrap > input {
    max-width: 100%;
}

Please feel free to ask any other questions that you might have.

Kind Regards, Roman.
aThemes Support