.navbar.navbar-light.navbar-expand-md.navigation-clean-search {
  background-color: rgb(221,221,221);
  color: rgb(0,51,102);
}

#search-field {
  background-color: #ffffff;
  margin-left: 10px;
}

centrado {
  text-align: center;
  margin-right: auto;
  margin-left: auto;
}