.mail_ui_0 {display: flex; flex-wrap: nowrap; align-items: top; width: 100%;
            border: 2px solid rgba(var(--color_1), 0.1); overflow: hidden;}
.mail_ui_1 {flex: 0 0 250px; border-right: 2px solid rgba(var(--color_1), 0.1);}
.mail_ui_2 {flex-basis: 100%;}

/* Portrait */
@media only screen and (orientation:portrait) {
  .mail_ui_1 {flex: 0 0 100%; border-right: 0px solid rgba(var(--color_1), 0.1);}
  .mail_ui_2 {display: none;}
}