.page {
  position: relative;
  display: flex;
  flex-direction: row;
}
main {
  flex: 1;
  background-color: #f7fbff;
  width: 100%;
  /*margin: 0.5rem 0.5rem 0.5rem 0.2rem;
    border-radius: 1rem;
    box-shadow: 3px 3px 10px 0px #D1D1D1;*/
}
.nav {
  width: 18rem;
  height: 98vh;
  position: sticky;
  top: 0;
  transition: 0.35s;
}