diff --git a/core/core.php b/core/core.php
index 4fdff449..ae879af0 100644
--- a/core/core.php
+++ b/core/core.php
@@ -1216,7 +1216,8 @@ class core extends common {
 			$css .= '#footerCopyright{text-align:' . $this->getData(['theme', 'footer', 'copyrightAlign']) . '}';
 			// Marge supplémentaire lorsque le pied de page est fixe 
 			if ( $this->getData(['theme', 'footer', 'fixed']) === true) {
-				$css .= "#site {margin-bottom: 150px;}";
+				$css .= "@media (min-width: 769px) { #site {margin-bottom: 100px;} }";
+				$css .= "@media (max-width: 768px) { #site {margin-bottom: 150px;} }";
 			}
 			// Enregistre la personnalisation
 			file_put_contents(self::DATA_DIR.'theme.css', $css);
diff --git a/core/layout/common.css b/core/layout/common.css
index 64ae620d..d6d280e8 100755
--- a/core/layout/common.css
+++ b/core/layout/common.css
@@ -28,7 +28,7 @@ body {
 }
 
 
-@media (min-width: 769px) {
+@media (min-width: 768px) {
 	body {
 		margin:0px 10px;
 	}
@@ -336,7 +336,7 @@ td > .col12 {
 	border: 0;
 }
 
-@media (min-width: 769px) {
+@media (min-width: 768px) {
 	#bar #barLeft {
 		float: left;
 	}	
@@ -486,7 +486,7 @@ nav a {
 nav a:hover {
 	text-decoration: none;
 }
-@media (min-width: 769px) {
+@media (min-width: 768px) {
 	nav #menu {
 		display: block;
 	}