.pagination {
  display: flex;
  justify-content: center;
  list-style: none; /* remove list bullets */
  padding: 0px;
}

.pagination li a {
  display: block; /* let links fill the list item */
  padding: 8px 12px;
  text-decoration: none;
  border: 1px solid gray;
  color: black;  
  margin: 0 4px;
  border-radius: 5px; /* add rounded borders */
}