.nav {
  display: flex;
  flex-wrap: wrap;
  padding-left: 0;
  margin-bottom: 0;
  list-style: none;
  }

.nav-link {
  display: block;
  padding: 0.5rem 1rem;
  border-radius: 0.25rem;
  background-color: #fff;
  border: 1px solid rgba(0, 0, 0, 0.125);
  font-size: 1rem;  
  }
  
.nav-fill .nav-item {
  flex: 1 1 auto;
  text-align: center; 
  margin: 0.5rem !important;
  }

  
.nav-link.active{
  color: #fff;
  background-color: #8c0000; }