BUGFIX in nav-right

WIP #2

basetheme_bootstrap/static/css/basetheme_bootstrap4_pasteur.css

@@ -129,8 +129,10 @@ header .dropdown.show>a {
     /*margin-right: 20px;*/
     padding: 15px 1rem;
 }
+.header__nav .navbar-nav,
 .header__nav>.main-nav{
     display: flex;
+    flex-direction: row;
 }
 .header__nav>.main-nav>*:not(.navbar-right){
     flex:1 1 auto;