diff --git a/css/_sq_balint.scss b/css/_sq_balint.scss
index 4950543..d6d39c0 100644
--- a/css/_sq_balint.scss
+++ b/css/_sq_balint.scss
@@ -32,10 +32,21 @@ a, a:hover {
 #menu-principal{
 	padding: 1rem 2rem;
 	background-color: $fond-menu;
-	a{
+	transition: all 1s;
+	.nav-link{
 		color: $light;
 		font-weight: 600;
+		transition: all 1s ease;
 	}
+	.navbar-brand{
+		width: 200px;
+		transition: all 1s ease;
+		img{
+			width: 100%;
+			height: auto;
+			transition: all 1s ease;
+		}
+	} 
 	.active a{
 		color: $page-active;
 	}
@@ -46,10 +57,17 @@ a, a:hover {
 		font-size: 1.8rem;
 		color: $light;
 	}
+	&.reduit{
+		padding: 0.2rem 2rem;
+		.nav-link{
+			padding: 0.2rem 0.5rem;
+		}
+		.navbar-brand{
+			width: 150px;
+		}	
+	}
 }
 
-
-
 #liste-deroulante ul{
 	list-style-type: none;
 }
diff --git a/css/mon_site.css b/css/mon_site.css
index 1e46401..659bf77 100644
--- a/css/mon_site.css
+++ b/css/mon_site.css
@@ -11860,11 +11860,28 @@ a, a:hover {
 #menu-principal {
   padding: 1rem 2rem;
   background-color: #3b3f8a;
+  -webkit-transition: all 1s;
+  transition: all 1s;
 }
 
-#menu-principal a {
+#menu-principal .nav-link {
   color: #f8f9fa;
   font-weight: 600;
+  -webkit-transition: all 1s ease;
+  transition: all 1s ease;
+}
+
+#menu-principal .navbar-brand {
+  width: 200px;
+  -webkit-transition: all 1s ease;
+  transition: all 1s ease;
+}
+
+#menu-principal .navbar-brand img {
+  width: 100%;
+  height: auto;
+  -webkit-transition: all 1s ease;
+  transition: all 1s ease;
 }
 
 #menu-principal .active a {
@@ -11880,6 +11897,18 @@ a, a:hover {
   color: #f8f9fa;
 }
 
+#menu-principal.reduit {
+  padding: 0.2rem 2rem;
+}
+
+#menu-principal.reduit .nav-link {
+  padding: 0.2rem 0.5rem;
+}
+
+#menu-principal.reduit .navbar-brand {
+  width: 150px;
+}
+
 #liste-deroulante ul {
   list-style-type: none;
 }
diff --git a/js/a_compresser/balint.js b/js/a_compresser/balint.js
index bc5ca66..ae59a7b 100644
--- a/js/a_compresser/balint.js
+++ b/js/a_compresser/balint.js
@@ -47,11 +47,11 @@ jQuery(function($) {
 	var barnavOffset = 0;
     $(window).on('scroll', function () {
         if ( $(window).scrollTop() > barnavOffset ) {
-            $('header').addClass('navbar-fixed-reduite');
+            $('#menu-principal').addClass('reduit');
 			//$('button.burgermenu, #barnav ul.js-sous-menu').addClass('fixed-top');
         }
         else {
-			$('header').removeClass('navbar-fixed-reduite');
+			$('#menu-principal').removeClass('reduit');
 			//$('button.burgermenu, #barnav ul.js-sous-menu').removeClass('fixed-top');
         }
     });
diff --git a/js/mon_site.min.js b/js/mon_site.min.js
index 9bb3a87..ca786b7 100644
--- a/js/mon_site.min.js
+++ b/js/mon_site.min.js
@@ -1,2 +1,2 @@
-"use strict";jQuery(function(t){t(".parent_prev_next").on("click","svg.cursor",function(){var e=t(this).data("id_article"),n=t(this).data("bloc_recharger");ajaxReload(n,{args:{id_article:e}})}),t("a.page-scroll").bind("click",function(e){t(this);t("html, body").animate({scrollTop:0},"slow"),e.preventDefault()});t(window).on("scroll",function(){0<t(window).scrollTop()?t("header").addClass("navbar-fixed-reduite"):t("header").removeClass("navbar-fixed-reduite")}),window.addEventListener("resize",function(){document.getElementById("result"),"matchMedia"in window&&(window.matchMedia("(min-width:768px)").matches?(t("#header").removeClass("navbar-fixed-top"),t("button.burgermenu, #barnav ul.js-sous-menu").removeClass("fixed-top")):(t("#header").addClass("navbar-fixed-top"),t("button.burgermenu, #barnav ul.js-sous-menu").addClass("fixed-top")))},!1)}),jQuery(function(t){var n,a;t(".js-sous-menu ul").addClass("js-hidden"),t(".js-sous-menu").on("click","a",function(e){e.stopPropagation();var n=t(this).next();if(n.length)return t(n).toggleClass("js-hidden"),!1}),"querySelector"in document&&"addEventListener"in window&&(window.document.documentElement.className+=" js-enabled",n=document.querySelector(".nav-button"),a=document.querySelector("#barnav"),n&&n.addEventListener("click",function(e){n.classList.toggle("is-active"),a.classList.toggle("is-opened"),e.preventDefault()},!1))});
+"use strict";jQuery(function(t){t(".parent_prev_next").on("click","svg.cursor",function(){var e=t(this).data("id_article"),n=t(this).data("bloc_recharger");ajaxReload(n,{args:{id_article:e}})}),t("a.page-scroll").bind("click",function(e){t(this);t("html, body").animate({scrollTop:0},"slow"),e.preventDefault()});t(window).on("scroll",function(){0<t(window).scrollTop()?t("#menu-principal").addClass("reduit"):t("#menu-principal").removeClass("reduit")}),window.addEventListener("resize",function(){document.getElementById("result"),"matchMedia"in window&&(window.matchMedia("(min-width:768px)").matches?(t("#header").removeClass("navbar-fixed-top"),t("button.burgermenu, #barnav ul.js-sous-menu").removeClass("fixed-top")):(t("#header").addClass("navbar-fixed-top"),t("button.burgermenu, #barnav ul.js-sous-menu").addClass("fixed-top")))},!1)}),jQuery(function(t){var n,a;t(".js-sous-menu ul").addClass("js-hidden"),t(".js-sous-menu").on("click","a",function(e){e.stopPropagation();var n=t(this).next();if(n.length)return t(n).toggleClass("js-hidden"),!1}),"querySelector"in document&&"addEventListener"in window&&(window.document.documentElement.className+=" js-enabled",n=document.querySelector(".nav-button"),a=document.querySelector("#barnav"),n&&n.addEventListener("click",function(e){n.classList.toggle("is-active"),a.classList.toggle("is-opened"),e.preventDefault()},!1))});
 //# sourceMappingURL=mon_site.min.js.map