Hello, @houijiaymen,
Please copy and paste the below-given CSS code to XStore >> Theme Settings >> Theme Custom CSS >> Mobile Custom CSS and check back your site after removing the browser cache.
.et-mobile-panel .et_column {
padding-right: 5px !important;
padding-left: 5px !important;
}
Resulting Screenshot: https://postimg.cc/9rwML5xd
Regards 8Themes Team.