.overview {
  position: fixed;
  overflow-y: scroll;
  overflow-x: hidden;
  padding: 20px 0 0 50px;
  top: 50px;
  height: 100vh;
  bottom: 10px;
}

@media all and (max-width: 959px) {
  .overview {
    left: 345px;
  }
}