Geocraft -- resizing the bouton " set it on the map"

Hi,
I'm trying to resize the bouton that let poster to set the address on the map. i used the class name b_submit in the custom css area with 200px , but it didn't work. a file attached
i need your help
thank's.

 

Paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

 .field .b_submit{
width:400px!important;
}

This will solve your issue.

 

thank you very much . everything's ok now