Hello @mahdar,
Please copy and paste the following CSS code into XStore >> Theme Options >> Theme Custom CSS >> Global CSS. After clearing your browser cache, the result should look like the image provided at the following link: https://postimg.cc/bGnXZffM.
.et_b_single-request-quote-popup.et-called-popup.active .et-popup {
width: 90% !important;
}
Thank you for your cooperation.
Best Regards,
8Theme’s Team