CSS For Media Query

Hi

I know you can change the style in the plugin admin but I need the form to be left aligned, which I have setup in the plugin but between 0 and 799px I need it centered. I’m struggling to find the right css using firebug.

I looked in the plugin css file and found the css shown below but it does not work for the media query below when added to the child theme. I need it to look like this http://grab.by/Hi7e

Can you tell me what the right css is that I can add to the media query below?

Thanks

/* Contact Form Center under 800px */
@media (min-width:0px) and (max-width:799px) {
div.fscf_required {
text-align: center !important;
}
div.fscf-div-field {
text-align: center !important;
}
div.fscf-div-label {
text-align: center !important;
}
div.fscf-div-submit {
text-align: center !important;
}
}

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