#t1ContentIn {
  display: flex;
  align-items: flex-start;
}

#t1Nav {
  position: sticky !important;
  top: 80px;
}

#t1Nav+div {
  flex: 1;
}

#t1Container .t1Content {
  margin-left: 0;
}

@media screen and (max-width: 983px) {
  #t1ContentIn {
    flex-direction: column;
  }

  #t1Nav {
    position: static !important;
    width: 100%;
  }

  #t1Nav+div {
    width: 100%;
  }
}