.sidebar {
  width: 160px;
  flex-shrink: 0;
  padding: 20px;
  background-color: #ffffff;
  border-radius: 12px;
  box-shadow: 0 0 8px rgba(0,0,0,0.5);
  margin-top: 3rem;
  z-index: 1;
  align-self: flex-start;
}