.nav-item:hover .dropdown-menu {
    display:block;
    margin-top: 0; 
}


[class*="col-"] {
   padding-top: 5px;
  padding-bottom: 5px;
  padding-right: 5px;
  padding-left: 5px;

  spacing-top: 5px;
  spacing-bottom: 5px;
  spacing-right: 5px;
  spacing-left: 5px;


}