Add the following snippet to Appearance > Customize > Additional CSS:


@media only screen and (max-width: 1100px) {

  /* Header Details on Mobile */
  .mobile-header-details {
 display: block;
    padding: 3px 15px 13px 15px;
    border-bottom: 1px solid #eee;
  }

  .mobile-header-details h4.widget-title {
    font-size: 16px;
    margin-bottom: -5px;
  }

  .mobile-header-details .cg-header-details {
    padding-left: 38px;
    position: relative;
    margin-bottom: -5px;
  }

  .mobile-header-details .cg-header-details .textwidget {
    font-size: 15px;
  }

  .mobile-header-details .cg-header-details i {
    position: absolute;
    top: 7px;
    left: 5px;
    font-size: 28px;
  }

  .mobile-header-details .cg-header-details i.ion-ios-time-outline {
    left: 0px;
  }
}