.notifications-portal {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 2000;
}

@media only screen and (max-width: 600px) {
  .notifications-portal{
    margin: 0;
    width: initial;
  }
} 

@media only screen and (min-width: 768px) {
  .notifications-portal {
    margin: 30px;
    width: 708px;
  }
}