tried to add mobile & tablet styling but it didn't work

themes/default/static/css/main.css

@@ -2,7 +2,7 @@
 
 body{
 	margin:2em auto;
-	min-width: 1080px; 
+	min-width: 1080px;
 	max-width: 950px;
 	font-family: 'Basker';
 	font-size: 14pt;
@@ -10,7 +10,7 @@ body{
 	letter-spacing: 0.25pt;
 	color: rgba(40,40,40,1);
 	/*background-color: #d0bba0;*/
-	background-color: #ecddcb; 
+	background-color: #ecddcb;
 }
 h1, h2, h3, h4, h5, h6{
 	font-family: 'Belgika-reg';
@@ -22,13 +22,13 @@ header#banner{
 }
 	header#banner h1{
 		font-family: 'Syne';
-		font-size: 110px;
+		font-size: 7.5vw;
 		line-height:1.25;
-		margin: 1em 0;
+		margin: 0.7em 0;
 	}
 	header#banner h1 a{
 		text-decoration: none;
-		color: darkgoldenrod !important; 
+		color: darkgoldenrod !important;
 	}
 nav#menu{
 	width: calc(100% + 20em);
@@ -36,31 +36,31 @@ nav#menu{
 	margin:0 0 0 -11em;
 }
 	nav#menu li{
-		width: 145px;
+		width: 10vw;
-		height:10em;
+		height:10vw;
 		margin:1em 0;
 		padding:1em;
 		font-size: 75%;
 		line-height: 1.4;
 		color: rgba(40,40,40,1);
-		border:1px solid; 
+		border:1px solid;
 		border-radius: 1em;
 		list-style: none;
 		display: inline-block;
 		vertical-align: middle;
 	}
 	nav#menu li.active{
-		background-color: #95d1e6; 
+		background-color: #95d1e6;
 	}
 	nav#menu li.pagelink{
-		height: 1.5em;
+		height: 2.5em;
 	}
 	nav#menu a{
 		text-decoration: none;
 	}
 
 section#content{
-	margin: 4em 0;
+	margin: 4em;
 }
 article{
 	margin: 3em 0 2em 0;
@@ -68,7 +68,7 @@ article{
 	border-top: 1px solid;
 }
 	article:first-child{
-		background-color: #95d1e6; 
+		background-color: #95d1e6;
 		padding-bottom: 3em;
 		margin-bottom: -3em;
 	}
@@ -125,13 +125,13 @@ ul.navprevnext{
 		width: calc(50% - 17em);
 		height: 150px;
 		top:0;
-		background-color: #95d1e6; 
+		background-color: #95d1e6;
-		border-radius: 1em; 
+		border-radius: 1em;
 		padding:1em 3em;
 		font-size: 11pt;
 		line-height: 1.4;
 		list-style: none;
-		border:1px solid black; 
+		border:1px solid black;
 	}
 	ul.navprevnext a{
 		text-decoration: none;
@@ -182,9 +182,9 @@ footer{
 }
 
 /* general elements */
-a, 
+a,
-a:visited, 
+a:visited,
-a:hover, 
+a:hover,
 a:active{
 	color: rgba(40,40,40,1);
 }
@@ -213,7 +213,7 @@ blockquote{
 	font-size: 125%;
 	line-height: 1.9;
 }
-pre, 
+pre,
 code{
 	color: #c600c6;
 }
@@ -221,4 +221,39 @@ code{
 .lastupdate{
 	font-size: smaller;
 	margin:4em 0;
-}
+}
+
+p {
+	word-break: break-word;
+}
+
+
+/* Layout phone */
+@media (max-width:770px) {
+	nav#menu li {
+		width: 50vw;
+		height: 24vw;
+		font-size: 2em;
+		margin: 1em 0.1em;
+	}
+
+	header#banner h1 {
+		font-size: 10vw;
+	}
+
+	body{
+		margin-left: 9.4vw;
+	}
+
+}
+
+/* Layout tablet */
+@media (max-width:1024px) {
+	body {
+		margin-left: 13vw;
+	}
+
+		nav#menu li {
+			height: 14vw;
+		}
+}