/* حالت تمام‌عرض — پیش‌فرض در المنتور */
#sms-gallery-landing.is-full-width {
  width: 100vw;
  max-width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

#sms-gallery-landing:not(.is-full-width) {
  width: 100% !important;
  max-width: 100% !important;
  margin-left: 0 !important;
  margin-right: 0 !important;
}